How can I control the spawning of my blueprints?

Ive got some class blueprints and now i want them to spawn after one another. I mean that when the first spawn then right after the first to spawn the other one. But i want the 5 classes to spawn random i mean if i have 1 2 3 4 5 to spawn not 1 2 3 4 5 but to 3 2 1 45 and that going again and again to be random but i want not to spawn 3 to 3 every single to not be the same like the previous. OH my english is terrible :smiley: