I wish to have a laptop with two primary users, who wil need to run the
same apps. Should I install the apps (e.g., FireFox, Word (through
Crosover Office Emulator), GIMP) when logged in as Administrator, or as
the user? Either user can have access to the others' files, that's OK,
but there will be user-specific preferences (i.e., the wife likes
things her way).

A search in Google didn't turn up an answer to this question, so I hope
if it's inappropriate here or resolved elsewhere you can gently point
me in the right direction.

Thank you kindly.