A Workshop map
Open the Maps tab, paste the map's Workshop link or ID and press Play it now. The server downloads it from Steam and changes to it (we tested this on a real server with a Workshop map). Players download it from Steam when they join. Maps the server has downloaded are listed so you can play them again.
A collection
Set Workshop Collection in Deployment Settings to a collection's link or ID and its maps become the server's map group. We have verified that the server accepts the setting; we have not yet played through a collection.
The map cycle
The Maps tab's map cycle is the order stock maps follow after each match, and the list the GG1 MapChooser plugin offers players in its end-of-match vote. Add maps with the plus buttons, put them in order and save.
Frequently asked questions
Do players need the Workshop map first?
No. They download it from Steam when they join.
Can I upload my own map file?
CS2 maps are Workshop items, so publish the map to the Workshop and play it by its link.