To make changes to an existing submission, select it in the published files list and click Edit. To upload a new map to workshop, click on Add then fill out all the fields.
There is this addon called Legacy Addons (or something) in which you can put non – workshop props into your game! How do you play GMOD workshop maps? Just go into your steam/steamapps/common/garry’s mod/garrysmod/addons and install them like you normally would. How do I install GMOD addons without workshop? Find the Addon (.GMA) inside of the “addons” Folder.Click on the “Browse Local Files” Button.Right Click Garry’s Mod, and Click on Properties.