Can I set up a MR user that I can use to alias as to test security?

I don’t want to go back and forth with the CEO of the company to see if “it works” multiple times. I’m having trouble finding the right terms to do a google search and the help in MR isn’t finding anything with “alias” in it so thought I’d ask here.

I am set as an administrator in MR and I assume we are on a very old version of MR (2.12.16003.25). We have a new team with a different mindset from the past so I know we need to upgrade. In the meantime, I just want to make sure those that need reports can actually get to them until we do the upgrade. Thank you!!!