Alien Swarm: Advice (How to put another company in practice)

And so let’s start, first open the console, press the tilde (~)

Then we write the command 

asw_show_all_singleplayer_maps 1

And press practice (one player) 

And a window pops up for you along with the creation of the game, and we choose a company 

P. S. Do not judge strictly, this is my first post)