Create a mission in the editor.
Place a Blufor rifleman as the player, a Zeus GM module and link them (also make the rifleman the controller of Zeus).
In description.ext write this:
respawn = 3;
respawnDelay = 2;
respawnOnStart = 0;
Export as a multiplayer mission and load it up.
You will play as the rifleman. Change to Zeus, place a Blufor spawn module. Change back to the rifleman and kill yourself. You will have no spawn points.
Repeat the process, but this time add:
respawnTemplates[] = {"MenuPosition"};
to the description.ext.
This time, when you die, you will get the spawn point selector, although it has only one choice - the Zeus spawn point.