First off, send Lehsbos a friend request, then scroll on over to: Player Channel>Custom Games>Capture the Flag. Copy the game mode on over to your profile and save it.

Now to actually freeze the bots:
You will want to do the cod caster glitch:
-Spawn in, the timer will be at 60.
-Change teams to CodCaster.
Hit START then hover over change teams.
-Mash A until you spawn in and you will jump and be free to move around during the timer.
-Then you will want to run to the enemy spawn and take the flag and commit suicide where you want the bots to stand.
-Give it a few seconds and all the bots will gather around the flag and freeze.

This game mode is useful if you want to trickshot without having someone else setting up for you, finding glitches, and so on.

If you want to change the classes, then you can only change the bottom four classes.