If your school decides to manage a business role, this business role will no longer be updated with improvements by Arbor. You can see further details here: Assuming responsibility for a Business Role
Can I remove permissions from a business role?
Yes, but this means taking responsibility for the business role. We have steps on how to do this in the article here.
Can I add permissions to a business role?
If you need to add an additional permission to a staff member, we recommend that you assign them this as an Ad-Hoc permission.
However, you can also take responsibility for the business role and add additional permission(s).
We have steps in the guide here on how to do both of these.