Map Modeling Question (Disciples 2: Dark Prophecy)

People who are fumbling, tell me how to get the autospawn of mobs on the maps?

For example, I created 5 detachments of level 99 neutral units, gave them patrol trajectories so that they would not be dumb on the spot (some run around the entire map, destroying everything that is not decoration). When you take out their card remains bare, so the desire to set an event so that, subject to death, the killed squad reappears at a given point after a certain number of moves.

How to create this event so that the killed squad will spawn again at the spawn point?