Scheduling Privilege

I started a new role within my company and I have scheduling privilege's for 3 VP's. However, the prior admin has been taken off and only given viewing rights. But still, when i go to reschedule/cancel a meeting that has been booked prior me starting the new role, an error message pops up. It will also give the VP the meeting is scheduled for an error message that they cannot reschedule/cancel. I NEED to be able to have access to  reschedule/cancel meetings that were created prior to me starting this role. Does anybody know if this is possible?