Each profile runs in its own thread. You can run profiles in parallel, but it's not generally recommended, as they will usually be contending for something, e.g. disk access, network bandwidth, USB bus... You can create Groups, and thus trigger a group to run multiple profiles. By default it will run them sequentially, which is usually more efficient overall. In the latest versions, you can also Queue profiles (which is always sequential) as an ad-hoc method
Various options are available to control bandwidth, priority, process priority ('procpriority'), affinity, etc, A quick search on those terms in the Help will get you more details. Some of them are via command-line only (e.g. scheduler, shortcut, batch file...)
Various options are available to control bandwidth, priority, process priority ('procpriority'), affinity, etc, A quick search on those terms in the Help will get you more details. Some of them are via command-line only (e.g. scheduler, shortcut, batch file...)