What do you exactly mean by groups/subgroups? Are you talking about the report items or the users/windows groups for setting permissions..

Can you explain the scenario in detail, may be using...

You might need use a windows jobs to check every few seconds if the service is up or not!!

There isn't any other easy way to check this.

If you don't need those reports, and the datasources, go ahead and delete them.

This is fine to delete since you don't need them anymore..

When we view the report items in...