i have a phone with several profiles
i can access the backup settings from each profile. enter each time a different 12 word code.
but i only have one usb disk
i see that seedvault stores the backups in a hidden folder

if a first backup the owner profile and then switch and backup the secondary profile.
will the owner backup we overwritten or will multiple 'seedvault hidden folders created on the disk?

and how do select which one i want to restore?

Hello m4ri0g,
I have just tested it. Backups of several profiles on one USB drive are possible.

There is the folder “.SeedVaultAndroidBackup” on the USB drive.
And seedvault creates a separate subfolder for each profile. So that they can coexist without any problems.

If you back up a profile for which a backup already exists, this existing backup is deleted and replaced by the new one, but the backups from the other profiles are not touched.

Please note: if you switch between profiles, you must always disconnect and reconnect the USB drive, otherwise the new profile cannot access the USB drive.

When restoring, simply enter the 12 words of the profile from which you want to restore the backup. There is no direct selection option.
12 words of profile A => backup from profile A will restored.
12 words of profile B => backup from profile B will restored.

Seedvauly backups tend to work better if you make them to the devices internal storage and then transfer them to external usb drive.
They still often miss things so best not to fully rely on them and use alterative methods for important data.