Change MDM profile

We have both 'normal' iPads and Shared iPads.

Normal iPads are assigned to a user in our school, enrolled with MDM.

Then we have 90 shared iPads, which can be used during a certain class by different users.

Now I want to change a number of normal iPads which we have in stock, not used but enrolled with normal profile, to an Shared iPad.

We have Jamf School as interface for controlling the iPads, also Apple School Manager.

Is there a manual how to do this??

Thanks!