Is there a way to update a group's access from editor to viewer on a shared folder? I've been able to use the UpdateFolderMemberAsync for users and invitees. Not sure I can use that endpoint with the MemberSelector parameter.
Yes, you can use a group ID in a MemberSelector.DropboxId for UpdateFolderMemberAsync, like this:
MemberSelector.DropboxId memberSelector = new MemberSelector.DropboxId(groupId); MemberAccessLevelResult updateMemberResult = await client.Sharing.UpdateFolderMemberAsync( sharedFolderId: sharedFolderId, member: memberSelector, accessLevel: AccessLevel.Viewer.Instance);