I'm helping someone who is divorced and needs credentials changed on her iMac. It is using a local account with her ex-husband's name and iCloud account. I would appreciate some assistance with a strategy so I don't overlook anything.
Access point SSID and password have been changed, as well as the router's password (which was still set at factory default!). Her email password has been changed, along with website passwords.
I have created a new account on the Mac with Administrator access and changed the password on the old account. Verified it has no remote access apps. Ready to create a new Apple iCloud account based on her own e-mail address.
The things that are on my mind due to knowing MacOS less than Windows:
What happens to apps purchased on the old Apple ID once this machine is updated to the new one? Must they be repurchased?
iCloud's list of devices includes this Mac, her kids' iPads, and her iPhone. But it also includes his iPhone. Best way to move these devices to the new iCloud account without disturbing his?
Best way to copy Safari and Firefox history/bookmarks/etc to the new account?
Any other important steps?