Question for HoMM V pack owners.

Sup yall?

I have a question, i see that Tribes of the east expension lets you play with orc race,gives alternative upgrades of course new maps,artefacts and so on.Hammers of fate does the same,new artefacts,units,dwarven race,neutral creeps,random map generator feature so yeah,do i need to launch each expension differently to get their features? artefatcs/alternative upgrades/units etc.Or all of them will integrate with original HoMM V and i'll need to launch hammers of fate and tribes of the east for their unique campaigns and multiplayer maps?