We are in the process of testing DevTest 10.4. For some testing groups, they need to have multiple Simulators, so they have created additional Simulator services to run on the server. Once created, our users are experiencing issues trying to select the new Simulator service when creating tests. They are not able to select either the new Simulator service or the original Simulator service. See the attached Word doc which explains the issue.

Resource Groups were created for DEVTEST Services ( Registry. Simulators...) . This User group did not have permissions to use any of the services (Simulator1 or 2). 

All supported DevTest Environments

Deleted Resource Groups,  and Users  were allowed to select any Simulator service for the tests.