Adding Spells to a Custom Class

[Barrels23]

Hi everybody. I am currently working on inputing Matthew Mercer's Blood Hunter class into Hero Lab for D&D 5e, and I have hit a stumbling block. I have everything put in for the class except for (a) The Order of the Profane Soul archetype, and (b) how to put in the multi-classing requirements. With problem a, I can't figure out how to put in the class's spellcasting. It casts spells similarly to a Warlock, and uses the Warlock spell list. Any hints/tips to help me out?

Also, if anyone could help with problem b as well, that would be awesome.