USE permission on a bioplate is not enough to actually use it for biomaterial
Create a bioplate and share it to another user with USE permission. When logged in as that user, try to add biomaterial to the plate (for example via the plate template on the view-page).
The page will show "You are not allowed to add biomaterial to this well".
Trying to add biomaterial from the "Wells" tab opens a popup window but it only displays "Permission denied: Not allowed to write Biowell[id=xxx]"
The workaround is to give the user WRITE permission to the bioplate.