No, not yet. The method proposed by Adaxes isn't trivial because they do not appear to have a native option to specify the affected user's manager for approval, only the requester's manager or owner of the group, etc. Ideally you would be able to use a template for the list of approvers, but cannot at this time, hence the need for a powershell script. To keep it simple, we will probably just use a scheduled task to email the manager with a list of each of their direct reports in the specified group and if they reply, a ticket will be generated in our help desk system and our staff will manually remove the membership.