Django Admin drop down combobox and assigned values

Question

I have several question for the Django Admin feature. Im kind of new in Django so im not sure how to do it.

Basically what Im looking to do is when Im adding information on the model.

Some of the fields i want them to be combo-boxes with AutoCompleteMode.

Also looking for some fields to have the same information, for example if i have a datatime field I want that information to feed the fields day, month and year

from hoti.hotiapp.models import Occurrence
from django.contrib import admin

class MyModelAdmin(admin.ModelAdmin):
    exclude = ['reference',]

admin.site.register(Occurrence, MyModelAdmin)

Anything helps

Thanks in advance