User Activity

My manager and I have to do some cleanup. We have over 3,000 purchase orders to delete, and cannot find any way to do so except for going through and deleting each one individually.Is anyone aware of a process that could group all POs within a specif...
We have an automatic reply set up for after-hours, but I was wondering if there's some sort of temporary automatic reply we could set up for holidays that fall during our usual operating hours?