Hi again waverley77.
To import/package Sims into a world in CAW requires using a few NRaas mods.
Master Controller, DeBugEnabler & Porter.
You can find a tutorial by Kiwi-Tea @ Pasimfic Wiki on how to add Sims in CAW
hereAdding Sims to CAW is an intermediate/advanced undertaking, but if you can get your custom flyover figured out, you'll probably be fine :wink:
Always keep a backup of your world in safe place.
Done wrong this process will corrupt world file & make it unplayable.
The FAQ at the top of this forum is an invaluable resource.
I'd recommend it as your first go to when looking for most things CAW.
Edit: A much simpler solution if you want to share a prepopulated world, is to offer a "save file" with Sims you've added in game.