I think this video of how to use a free online service is really useful.
It allows you to create a cut list from whatever size sheet you want to cut from.
I haven't used it yet, but I will give it a try next time I'm back inside my 'shop.
I've followed this chap since he started his channel. I found it quite useful.
[youtube]kbfnTOzh7_4[/youtube]
The cutlist optimiser website is below.
https://www.cutlistoptimizer.com