Run more then one selenium at a time?

I was wondering if it was possible to run more then one Selenium instance at once, since even if I pick 20 bots in jobs it still only open one selenium browser at a time. I know my computer can handle 20+ selenium instances in headless mode.
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Number of bots will equal to number of browsers in use, turn headless off to see 20 browser windows pop up

even when having it set to 200 hundred it still runs one at a time. First it opens bot 1, finishes task then closes and opens bot two etc etc.

That is weird my friend