concurrent requests

I am looking to try private instances, but can’t seem to find an answer to some questions before I jump in.

Can one private instance run multiple requests at once? If so, is the concurrency configurable?

Can one instance run multiple browsers? Or do I need a private instance for each browser.

If these are simple answers and someone could point me at some resources that would be helpful! thanks!

A private instance is a combination of a web server and one or more test agents. One web server can handle as many test agents connecting as the hardware supports (see the public instance as an example).

For single-location concurrency, multiple agents can all work off of the same test queue/location so concurrency is controlled by the number of agents you deploy.

Also I work in my private instance …
Can I turn on more than one agent on the same probe, eg two wptdriver for different browsers?