diff --git a/aitrainer_backoffice/aitrainer_backoffice/admin.py b/aitrainer_backoffice/aitrainer_backoffice/admin.py
index 3e5c69d..63a55a0 100644
--- a/aitrainer_backoffice/aitrainer_backoffice/admin.py
+++ b/aitrainer_backoffice/aitrainer_backoffice/admin.py
@@ -1,8 +1,9 @@
 from django.contrib import admin
 from django.utils.html import format_html
 from django.utils.translation import ugettext_lazy as _
-from .models import ExerciseType, Product, Purchase, Property, PropertyTranslation
-from .models import ExerciseDevice, ExerciseDeviceTranslation, ExerciseTypeDevice
+from .models import ExerciseType, ExerciseTypeAlternative, ExerciseTypeParents
+from .models import Product, Purchase, Property, PropertyTranslation
+from .models import ExerciseDevice, ExerciseDeviceTranslation, ExerciseTypeDevice, ExerciseDeviceAlternative
 from .models import ExerciseTypeImage
 from .models import ExerciseTypeTranslation
 from .models import ExerciseTreeTranslation
@@ -60,8 +61,9 @@ class ExerciseTypeAdmin(admin.ModelAdmin):
     inlines = [
         ImageInline,
         TranslationInline,
-        ExerciseTypeDeviceInline
+        ExerciseTypeDeviceInline,
     ]
+    exclude = ('exercise_tree',)
 
 
 class TranslationTreeInline(admin.TabularInline):
@@ -128,8 +130,8 @@ class ExercisePlanAdmin(admin.ModelAdmin):
 
 
 class ExercisePlanDetailAdmin(admin.ModelAdmin):
-    list_display = ( 'get_plan', 'get_exercise_type', 'serie', 'repeat', 'weight_equation',)
-    list_editable = ('serie', 'repeat', 'weight_equation',)
+    list_display = ( 'get_plan', 'get_exercise_type', 'serie', 'repeats', 'weight_equation',)
+    list_editable = ('serie', 'repeats', 'weight_equation',)
     #list_editable_link('',)
 
     def get_plan(self, obj):
@@ -176,6 +178,10 @@ class TranslationExerciseDeviceInline(admin.TabularInline):
     fields = ('language_code', 'name')
     extra = 0
 
+    def __init__(self, parent_model, admin_site):
+        super().__init__(parent_model, admin_site)
+        self.short_description = _("Nyelvi kód")
+
 
 class ExerciseDeviceAdmin(admin.ModelAdmin):
     list_display = ('exercise_device_id', 'name')
@@ -191,10 +197,22 @@ class ExerciseDeviceAdmin(admin.ModelAdmin):
     get_image_preview.short_description = _("Image Preview")
 
     inlines = [
-        TranslationExerciseDeviceInline
+        TranslationExerciseDeviceInline,
     ]
 
 
+class ExerciseDeviceAlternativeAdmin(admin.ModelAdmin):
+    list_display = ('exercise_device_alternative_id', 'exercise_device_parent')
+
+
+class ExerciseTypeAlternativeAdmin(admin.ModelAdmin):
+    list_display = ('exercise_type_alternative_id',)
+
+
+class ExerciseTypeParentsAdmin(admin.ModelAdmin):
+    list_display = ('exercise_type_parents_id', 'exercise_type')
+
+
 admin.site.register(ExerciseType, ExerciseTypeAdmin)
 admin.site.register(ExerciseTree, ExerciseTreeAdmin)
 admin.site.register(ExercisePlan, ExercisePlanAdmin)
@@ -203,5 +221,8 @@ admin.site.register(Product, ProductAdmin)
 admin.site.register(Purchase, PurchaseAdmin)
 admin.site.register(Property, PropertyAdmin)
 admin.site.register(ExerciseDevice, ExerciseDeviceAdmin)
+admin.site.register(ExerciseDeviceAlternative, ExerciseDeviceAlternativeAdmin)
+admin.site.register(ExerciseTypeAlternative, ExerciseTypeAlternativeAdmin)
+admin.site.register(ExerciseTypeParents, ExerciseTypeParentsAdmin)
 admin.autodiscover()
 
diff --git a/aitrainer_backoffice/aitrainer_backoffice/locale/hu/LC_MESSAGES/django.mo b/aitrainer_backoffice/aitrainer_backoffice/locale/hu/LC_MESSAGES/django.mo
new file mode 100644
index 0000000..565a78e
Binary files /dev/null and b/aitrainer_backoffice/aitrainer_backoffice/locale/hu/LC_MESSAGES/django.mo differ
diff --git a/aitrainer_backoffice/aitrainer_backoffice/locale/hu/LC_MESSAGES/django.po b/aitrainer_backoffice/aitrainer_backoffice/locale/hu/LC_MESSAGES/django.po
new file mode 100644
index 0000000..8942dd4
--- /dev/null
+++ b/aitrainer_backoffice/aitrainer_backoffice/locale/hu/LC_MESSAGES/django.po
@@ -0,0 +1,132 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2020-12-03 14:42+0100\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+#: .\aitrainer_backoffice\admin.py:34 .\aitrainer_backoffice\admin.py:88
+#: .\aitrainer_backoffice\admin.py:194
+msgid "Image Preview"
+msgstr "Kép előnézet"
+
+#: .\aitrainer_backoffice\models.py:21 .\aitrainer_backoffice\models.py:252
+msgid "Exercise Device"
+msgstr "Edzés eszköz"
+
+#: .\aitrainer_backoffice\models.py:22 .\aitrainer_backoffice\models.py:253
+msgid "Exercise Devices"
+msgstr "Edzés eszközök"
+
+#: .\aitrainer_backoffice\models.py:42
+msgid "Exercise Tree"
+msgstr "Gyakorlat menü"
+
+#: .\aitrainer_backoffice\models.py:43
+msgid "Exercise Tree Items"
+msgstr "Gyakorlat menü elem"
+
+#: .\aitrainer_backoffice\models.py:76
+msgid "Exercise"
+msgstr "Gyakorlat"
+
+#: .\aitrainer_backoffice\models.py:77
+msgid "Exercises"
+msgstr "Gyakorlatok"
+
+#: .\aitrainer_backoffice\models.py:97
+msgid "Image"
+msgstr "Kép"
+
+#: .\aitrainer_backoffice\models.py:98
+msgid "Images"
+msgstr "Képek"
+
+#: .\aitrainer_backoffice\models.py:113 .\aitrainer_backoffice\models.py:128
+#: .\aitrainer_backoffice\models.py:159 .\aitrainer_backoffice\models.py:238
+#: .\aitrainer_backoffice\models.py:264
+msgid "Translation"
+msgstr "Fordítás"
+
+#: .\aitrainer_backoffice\models.py:114 .\aitrainer_backoffice\models.py:129
+#: .\aitrainer_backoffice\models.py:160 .\aitrainer_backoffice\models.py:239
+#: .\aitrainer_backoffice\models.py:265
+msgid "Translations"
+msgstr "Fordítások"
+
+#: .\aitrainer_backoffice\models.py:143
+msgid "Exercise Plan"
+msgstr "Edzésterv"
+
+#: .\aitrainer_backoffice\models.py:144
+msgid "Exercise Plans"
+msgstr "Edzéstervek"
+
+#: .\aitrainer_backoffice\models.py:176
+msgid "Exercise Plan Detail"
+msgstr "Edzésterv gyakorlat"
+
+#: .\aitrainer_backoffice\models.py:177
+msgid "Exercise Plan Details"
+msgstr "Edzésterv gyakorlatok"
+
+#: .\aitrainer_backoffice\models.py:195
+msgid "Product"
+msgstr "Termék"
+
+#: .\aitrainer_backoffice\models.py:196
+msgid "Products"
+msgstr "Termékek"
+
+#: .\aitrainer_backoffice\models.py:212
+msgid "Purchase"
+msgstr "Vásárlás"
+
+#: .\aitrainer_backoffice\models.py:213
+msgid "Purchases"
+msgstr "Vásárlások"
+
+#: .\aitrainer_backoffice\models.py:223
+msgid "Customer Property"
+msgstr "Ügyfél tulajdonság"
+
+#: .\aitrainer_backoffice\models.py:224
+msgid "Customer Properties"
+msgstr "Ügyfél tulajdonságok"
+
+#: .\aitrainer_backoffice\models.py:280
+msgid "Device Alternative"
+msgstr "Eszköz alternatíva"
+
+#: .\aitrainer_backoffice\models.py:281
+msgid "Device Alternatives"
+msgstr "Eszköz alternatívák"
+
+#: .\aitrainer_backoffice\models.py:292
+msgid "Exercise Alternative"
+msgstr "Gyakorlat alternatíva"
+
+#: .\aitrainer_backoffice\models.py:293
+msgid "Exercise Alternatives"
+msgstr "Gyakorlat alternatívák"
+
+#: .\aitrainer_backoffice\models.py:304
+msgid "Exercise Parent"
+msgstr "Gyakorlat szülő menüpont"
+
+#: .\aitrainer_backoffice\models.py:305
+msgid "Exercise Parents"
+msgstr "Gyakorlat szülő menüpontok"
diff --git a/aitrainer_backoffice/aitrainer_backoffice/models.py b/aitrainer_backoffice/aitrainer_backoffice/models.py
index 5fde858..8aa1b54 100644
--- a/aitrainer_backoffice/aitrainer_backoffice/models.py
+++ b/aitrainer_backoffice/aitrainer_backoffice/models.py
@@ -68,6 +68,8 @@ class ExerciseType(models.Model):
                                           null=True)
     active = models.BooleanField(default=0, blank=True, null=True)
     base = models.BooleanField(default=0, blank=True, null=True)
+    parents = models.ManyToManyField(ExerciseTree, through='ExerciseTypeParents', related_name='ExerciseTree')
+
 
     class Meta:
         db_table = 'exercise_type'
@@ -166,7 +168,7 @@ class ExercisePlanDetail(models.Model):
     exercise_plan = models.ForeignKey(ExercisePlan, on_delete=models.CASCADE)
     exercise_type = models.ForeignKey(ExerciseType, on_delete=models.CASCADE)
     serie = models.IntegerField()
-    repeat = models.IntegerField()
+    repeats = models.IntegerField()
     weight_equation = models.CharField(max_length=100)
 
     class Meta:
@@ -264,3 +266,41 @@ class ExerciseDeviceTranslation(models.Model):
 
     def __str__(self):
         return self.name
+
+
+class ExerciseDeviceAlternative(models.Model):
+    exercise_device_alternative_id = models.AutoField(primary_key=True)
+    exercise_device_parent = models.ForeignKey(ExerciseDevice, on_delete=models.CASCADE,
+                                               related_name='exercise_device_parent')
+    exercise_device_child = models.ForeignKey(ExerciseDevice, on_delete=models.CASCADE,
+                                              related_name='exercise_device_child')
+
+    class Meta:
+        db_table = 'exercise_device_alternative'
+        verbose_name = _("Device Alternative")
+        verbose_name_plural = _("Device Alternatives")
+        unique_together = ['exercise_device_parent', 'exercise_device_child']
+
+
+class ExerciseTypeAlternative(models.Model):
+    exercise_type_alternative_id = models.AutoField(primary_key=True)
+    exercise_type_parent = models.ForeignKey(ExerciseType, on_delete=models.CASCADE, related_name='exercise_type_parent')
+    exercise_type_child = models.ForeignKey(ExerciseType, on_delete=models.CASCADE, related_name='exercise_type_child')
+
+    class Meta:
+        db_table = 'exercise_type_alternative'
+        verbose_name = _("Exercise Alternative")
+        verbose_name_plural = _("Exercise Alternatives")
+        #unique_together = [['exercise_type_parent', 'exercise_type_child']]
+
+
+class ExerciseTypeParents(models.Model):
+    exercise_type_parents_id = models.AutoField(primary_key=True)
+    exercise_type = models.ForeignKey(ExerciseType, on_delete=models.CASCADE)
+    exercise_tree = models.ForeignKey(ExerciseTree, on_delete=models.CASCADE)
+
+    class Meta:
+        db_table = 'exercise_type_parents'
+        verbose_name = _("Exercise Parent")
+        verbose_name_plural = _("Exercise Parents")
+        unique_together= [['exercise_type', 'exercise_tree']]
\ No newline at end of file
diff --git a/aitrainer_backoffice/aitrainer_backoffice/settings/dev.py b/aitrainer_backoffice/aitrainer_backoffice/settings/dev.py
index 924cb62..3c587b5 100644
--- a/aitrainer_backoffice/aitrainer_backoffice/settings/dev.py
+++ b/aitrainer_backoffice/aitrainer_backoffice/settings/dev.py
@@ -14,9 +14,11 @@ import os
 
 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+#BASE_DIR = Path(__file__).resolve().parent.parent.parent
 
 LOCALE_PATHS = [
-    'D:\\projects\\aitrainer\\src\\aitrainer_backoffice\\aitrainer_backoffice\\locale'
+    'D:\\projects\\aitrainer\\src\\aitrainer_backoffice\\aitrainer_backoffice\\locale',
+    os.path.join(BASE_DIR, 'locale')
 ]
 
 # Quick-start development settings - unsuitable for production
@@ -107,7 +109,7 @@ AUTH_PASSWORD_VALIDATORS = [
 # Internationalization
 # https://docs.djangoproject.com/en/3.0/topics/i18n/
 
-LANGUAGE_CODE = 'hu-HU'
+LANGUAGE_CODE = 'hu'
 
 TIME_ZONE = 'Europe/Budapest'
 
diff --git a/aitrainer_backoffice/aitrainer_backoffice/settings/prod.py b/aitrainer_backoffice/aitrainer_backoffice/settings/prod.py
index 9afa692..7044e6a 100644
--- a/aitrainer_backoffice/aitrainer_backoffice/settings/prod.py
+++ b/aitrainer_backoffice/aitrainer_backoffice/settings/prod.py
@@ -15,6 +15,8 @@ import os
 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
+LOCALE_PATHS = [os.path.join(BASE_DIR, 'locale')]
+
 # Quick-start development settings - unsuitable for production
 # See https://docs.djangoproject.com/en/3.0/howto/deployment/checklist/
 
diff --git a/aitrainer_backoffice/shell.bat b/aitrainer_backoffice/shell.bat
new file mode 100644
index 0000000..7cc5c69
--- /dev/null
+++ b/aitrainer_backoffice/shell.bat
@@ -0,0 +1 @@
+python manage.py shell --settings aitrainer_backoffice.settings.dev
\ No newline at end of file
diff --git a/aitrainer_backoffice/translate.bat b/aitrainer_backoffice/translate.bat
new file mode 100644
index 0000000..e20c367
--- /dev/null
+++ b/aitrainer_backoffice/translate.bat
@@ -0,0 +1 @@
+django-admin makemessages -l hu --ignore venv  --pythonpath "D:\projects\aitrainer\src\aitrainer_backoffice" --settings aitrainer_backoffice.aitrainer_backoffice.settings.dev
\ No newline at end of file