Open the command console: ESC > Gear Icon > Under the keyboard tab select Advanced > Check off Enable Developer Console
Press the ` button to open the console and type:
map cp_dustbowl; hostname "boost"; sv_lan 0; sv_cheats 0; (I had to input this twice to be detected on my LAN for some reason)
That will create your match. Choose Pyro on the Red Team. Then type the following command:
mp_teams_unbalance_limit 0; mp_idledealmethod 0; mp_idlemaxtime 0;
Now you will either need 3 Dummy accounts or 3+ Bots on the Blue team. You might want to add more than 3 as I find Engineers usually spawn and dont tend to cap points.To add bots:
tf_bot_add blue;
Use that 3 times to add the 3 bots and to make things easier set the bots to use melee only
tf_bot_melee_only 1;
Wait by the Capture point and wait for at least 3 guys to bundle up and light them up with the flamethower.