I make my own character sheets for RPGs. That allows me to automate things using Excel. All of this is self-taught. You will need Excel to view the links.
Then I decided to make an Excel spreadsheet to automate how the treasure in one of our games was divided up. It is based on a group of ten players and I had to redesign it for smaller groups as the calculations were static. I had planned on making a more fluid version where you could tell it how many players were in the group, but the group I was testing it on didn’t trust the calculations and thus we stopped using it before I could make any more refinements.
PTD Ten Player