PLEASE HELP how do you make a spawn sphere?

I need to make one and I don't have a clue how to.

 

Does your map is based on an existing one or it's a new fully new map? In the first case the spawn sphere should already be on the map, if not try to take from an other map

 

Just go to the scene of the map editor, find the spawn sphere in the list, and move it to where you would like. That's how I did it, fairly simple