Using the settings in the Options modal, you can set your level to either Campaign Mode or Battle Mode. Campaign Mode will set the level to run in a cooperative environment, and Battle Mode will set it to run in a competitive environment.
Using the input in the Options modal, you can set your level's name. When saving this level to the Cymatically Muffed server, it must have a unique name. When working on a server-saved level, changing this value will rename the existing level.