Hi,
First thing to start with would be create a staging document with either 2 or 3 instances assigned to your test run. The Coordinator will then spin up 2 or 3 virtual users and will assign each of them a test case from your suite which each virtual user will start executing concurrently. As soon as a virtual user completes a test case, he will be given a new one by the coordinator to execute until your suite is completed.
Does that fully cover our requirements?
Cheers,
Danny