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, Volia Ashi can only hire Kaspar, 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 Orantira. Maybe it's possible to change the campaign to allow for 3 heroes and add more. But I don't know how.