Prioritize query execution

Hey guys,
we just update our Redash version (to v8),
i wanted to understand, how to whole queries execution queue works,

  1. Is there a limit to the number of queries that Redash allows to run at any given moment?
  2. does Redash gives priority to the scheduled queries over the manually queries?
  3. can i prioritize the execution of manual queries over schedule queries?

Thanks for you assistance,

an example for a situation where 4 queries are running , and the rest are reserved.
is it possible to bring the manually run queries to the top of the queue?