It looks like you connected Meeting Attendance to itself, rather than to Meeting in Step 80. You need to edit the Meeting Attendance object, delete that Meeting ID field from it and redo those steps 78-82 to connect it to Meeting instead
It looks like you connected Meeting Attendance to itself, rather than to Meeting in Step 80. You need to edit the Meeting Attendance object, delete that Meeting ID field from it and redo those steps 78-82 to connect it to Meeting instead