MLC's clientless conferencing tool can host practically unlimited participants, meetings of 6 hours are supported and all meetings can be recorded and participants notified when it's available to view.
When a Remote Engagement space is setup MLC automagically creates a team on Office 365 to leverage off the great tools this suite provides like planner to track work done during the day.
Setup scheduled meeting times for a team and record their attendance. You'll need to host your sessions on an MLC Community or course though. Contact us to discuss how MLC can help setup a community of your own.