Add Average Column to Yearly Budget?

Can I add a column to my Yearly Budget sheet/tab for calculating the average for each category? I’m reluctant to edit it for the first time since that ‘Heads Up’ message warns against editing that sheet.

As a side note I’m also considering adding a graph to show each categories actual spend versus average. Are there any issues with adding such a graph to the Yearly Budget sheet?

Apologies if this is a dup- couldn’t find it in search. Thanks for any help!

You should be able to make those changes as you describe but if you havent already, i recommend the monthly analysis sheet for comparing average data and it already includes a graph for budget vs actual.

I just remembered that I’ve added to my monthly analysis sheet to show the average i can help with that if you’d like. This is the changes that i made to mine.