Avoiding Personal-Business Use Mixups

Quick answer, You just 'add' an account to your device and you have two (or more) sets of Vaults. With the 'teams' or 'business' one you can even set more restrictions on 'not being able to share/copy/delete'

The key sell 1Password has is the same as Microsoft did back in the day - if kids use it for free in school, they convince employers to pay for it at work-  only you do it in reverse :) So most people at the place I work/worked got to know 1P via work -> and leveraged the free personal family account that came with it => they start using it at home too which is two-fold; they use it at home so they know how to use it at work + they brag about it, so your neighbour talks to his boss to get it as well (not that he needs his boss to be more secure, but he also wants a free family account).

On the technical side (and not too much details, though, do feel free to ask):
-  One app, multiple 'that 1 password you never forget' (one for each account), multiple vaults
-  One WatchTower (though on the business side the admins get an even nicer one)
-  Free family accounts - if you pay for yours now, it 'suspends renewal'
-  If your business/non-profit has Single Sign On somewhere (and some means for interfacing) you would still remain with 'that 1 password' for family/home and just 'sign in with sso' for the other.

Lenghty enough I gather, does that answer your question mostly?