This is the list of the access control groups. By default in a fresh instance all groups are empty and no one can do anything. Add relevant users and IPs in the following groups. Make sure that users that have access to the isolate server also have equivalent access to the swarming server.
Members of this group can:
All users of swarming (both clients and bots) should also be in this group.
Members of this group can:
This is generally of use for external services that are purely doing analysis.