The compatibility issue between Hannibal’s mods and the original campaign.

I'm writing from my uncle's account. Can anyone help me? I have Hanik's master mods installed, which change the heroes. Because of this, in the campaign, only Kaspar can be recruited as Volia Ashi, as he is unchanged. And because of this, I can't complete the last mission because I need 4 Necromancer heroes to perform the ritual to remove the veil from Holyflame, but I can only get 2 heroes: Ornella and Kaspar. I don't count Orantir. Maybe it's possible to change the campaign to allow for 3 heroes and add more heroes. I just don't know how.