Setting up the Room

Step 1 - Create a room by clicking on 'Quick Host' or clicking in a 'Host' on the list.



Step 2 - Click on the 'Settings' button.



Step 3 - Choose the 'Patch' and the 'Mod', then confirm the 'OK' button.



Enabling Single Player Mode

Step 4 - Click on 'Game' tab, activate the 'Start at Single Player Menu' option and click the 'Launch' button.



Step 5 - Click on 'Map Editor', then click the 'Create Scenario' option.



Now you can create a map for the mod you want.