Custom parts/stickers for LEOCad

[Thomas Turgyt]

Hi, I was wondering how you make custom parts/stickers for your models in LEOCad. I use a Macbook Pro with macOS High Sierra, and I need to make a few specific minifig pieces, stickers, and bionicle-esque masks to make my models actually look presentable. Also, once I have the custom parts how do I add them to the LEOCad library?
LEOCad version is 23.03, macOS version is 10.13.6.
Thanks!