I honestly tried that. Used F1, type in Round Up and got 13 results and nothing about Rounding up! I also tried "Rounding" and it was promising but the "Rounding Expression" link in the help box brought me to definitions and nothing on how to do anything about it. i.e. I'm here!
Believe me, if I come to the forum, it's because I haven't been able to find it elsewhere!