After looking at the manual it appears the Output Location is the same for all selected output recipes. The bottom one in the list.
The way you can output to different Output Locations is to use the Subfolder field in the Process Recipe. That seems to be specific to each recipe.
So all variants will go to the save Output Location, but can be directed into subfolders within the Output Location folder.
"However, when two or more recipes are selected, you can use the File tab settings to create a folder for each (e.g., JPEGs in one folder, TIFFs to another), and then use the Output Location tool to output those folders to the same destination folder."
BTW: I clicked on the Online Help and the links are broken.