I am interested in these spells from Threshold of Knowledge being added to herolab. I know this is a free adventure but I don't know how to add custom spells into or if that is even possible.
Nettleskin
https://2e.aonprd.com/Spells.aspx?ID=1093
Gritty Wheeze
https://2e.aonprd.com/Spells.aspx?ID=1092
Thanks.