Step 1: Requirements
2. A friend.
3. 5 minutes at most.
Step 2: Part 1: Gamemode
1. Have friend go in to custom games and set up the game type to what you want.
2. Once it is loaded, back out until you are hosting a custom game.
3. Then go into the game options menu and press X to save game type.
4. Save as whatever you want.
Step 3: Part 2: Map
1. Make friend go to Forge Mode.
2. Make him/her select desired map.
3. Load map and play.
4. Press start and choose option "Save map as new file..."
THAT'S IT! You now have the gamemode and map. Repeat for any other things.