Guide on adding a new model, animation, and creature to HoMMV

Comrades, I've encountered the following problem: when replacing a generic peasant with a new creature from the 7th level, everything works perfectly. However, when adding this creature as a neutral unit on the map, the assigned abilities disappear (stats remain correct), and the selected camera also doesn't work – it displays the camera for a "Yeti" instead. I added the creatures in the same way as in the Zahar0z mod. Maybe this isn't the right section, but I'll post it here anyway. Thank you.