Hi Chris,
The way Azure AD works is pretty different from on-prem Active Directory, so we have to approach the problem differently, but there is a solution currently available.
Specifically, you can put a SAML group, such as an Azure AD group, in a Directory Server (LFDS) group, and then use that Directory Server group in places like the repository and Forms, e.g., to trust the group for login to the repository.
Currently, Laserfiche cannot see all group members the same way it does for, say, AD group sync in LFDS, but we are investigating how to improve group support for SAML generally (e.g., Okta and OneLogin in addition to Azure AD), and group membership is calculated on log in so it's up-to-date.