Step 1: Create an workshop item and name it MyMapExample
Step 2: Create ini file VNTE-MyMapExample.ini and place it in : Documents\My Games\Rising Storm 2\ROGame\Config or your main game Config folder
Step 3: Create a folder in Documents\My Games\Rising Storm 2\ROGame\Unpublished\CookedPC\Maps\MyMapExample and place there ROE files (VNTE-MyMapExample.roe)
Step 4: When youre done with your map make sure the lighting is built and it's saved in that folder above (not the Content folder)
Step 5: Restart all
Step 6: The files should be visible now so you can add ROE file to the "Packages to brew" window. If you have custom packages they also have to be added - its easier for server operators to have it bundled. Custom package has to be added to ROGame/Config/ROEditor.ini file: ModPackages section-> new line: ModPackages=...., restart is need to refresh the list, it should appear afterwards, the same procedure is with custom scripts
Step 7: When all this is finished - Brew -> Clean and full rebrew, then when the operation is done go "Upload to workshop"
Step 8: After uploading the map it will get a unique address plus its hidden by default. For others to test it you need to set it first to unlisted.
Step 9: if you want to check it on the server then this unique address has to be shared to server operator.
Step 10: when all is checked and tested you can go public, then it will be downloadable to all.

Thanks for the response, I actually manage to put the map out there in the meantime. It was actually my anti-virus inhibiting the upload to Steam. Had to fix the wall setup there and it went through great! VNTE-Factories. Cheers.