A command group is a group of other commands set to run in series and/or parallel with each other. Command groups are a good way to build up more complicated commands by using already tested components.
Commands can be dragged and dropped from the command palette and connected in order to form a command group. Commands in a command group can be either sequential or parallel commands. A sequential command will run in sequential order (one after another) while parallel commands will run concurrently (at the same time).
Only one sequential command can be connected and run at one time, however, multiple sequential commands can be connected in series to run in order. Additionally, any number of parallel commands can be connected to run simultaneously. Sequential commands cannot be connected from parallel commands.