Just bought freetime...How do you have others age with you?

[alleexm]

As long as you know some other sims that are the same age as you and are NPC's, there should be an option when that sim grows up.
I'll explain a little clearer:

Same age:
Just the same age group or whatever.. AKA teen, child, adult.

Know the sim:
The sim's picture should be in the relationship pannel. They don't have to be friends--they could be enemies for all it matters.

NPC:
Non-playing-character. NPCs are the sims like Joe Carr, and the kids that always annoyingly get brought home from school (Ricky, Chloe, etc.) To put it simpler--you didn't make them.