How Do I Delete My Recording History On My Directtv Record Of History/Network Administrator?

Record of History/Network Administrator? - how do i delete my recording history on my directtv

The instrument of my mother, comes to work (she's) teacher, two profiles. The first is from my mother and the other is a password protected "Network Administrator".

I'm curious if the administrator account can get deleted my internet history. I'm sure he would have a program installed, but if not, how does it work? When I completely removed the account of a third party application like e scrub would it still be saved?