I am an end user

There are multiple memos saved in my invoice screen, one of which it defaults to and is NOT named STD, Is this because it has somehow had something different created in it, or is always loading because its the last read? 

If it needs to be set somewhere in the memo, can someone send me instructions to do so. If it is consistently loading that way because of last read, can someone send me instructions on how to do that?

Secondly, if I wish to make these new memos global, do I need to be logged in as admin? or can it be done on my own log in? 

thanks!