On silent times or playtesting you can bring in bots to aid you in the combat. 
You run this mutator by adding mutator "Bots Mutator" in from the list. 

It contains following features: 
- You can alter what perks they should use and what perk level range they should be on. 
- You can order to follow or hold position, by pressing Use key at them. 
- They will give you cash if you are low on some (and they have a lot more of it). 
- They will even give cash to each other if they need. 
- They can use appropriate taunts at specific situations.