Best Practice Migrating MailinDBs to Sharefolders

Dear Forum,

are there any best practices in migrating Notes MailinDBs to Exchange Sharedmailboxes.

Domino:
MailinDB
Editor and Reader Groups

Exchange:
SharedMailbox
sendonbehalf Group
owner Group to manage the accessgroups

Is it possible to have the Readergroup migrated in somthing simmular to Exchange shared Mailbox.

Do we have to generate the groups in advance to the AD we do have MIM in charge.

any kind of enlightment woud be Appreciated.

Georg