I'm having a similar problem with my Personal & Business OneDrive accounts currently.
Ideally, I'd like to have several different vaults but can't seem to figure out how to best setup and sync.
Here's what I'd like to do:
Primary Vault = Personal - sync'd with Personal OneDrive account
Sub 1 Vault = Personal-Family - sync'd with a Family OneDrive account
Sub 2 Vault = Business-Personal - sync'd with Business OneDrive account
Sub 3 Vault = Business-Management Team - sync'd somewhere where all members can use.
Sub 4 Vault = Business-Accounting Team - sync'd somewhere all members can use.
Is it even possible to do this? If so, is there documentation to make it happen? I couldn't find anything.