Execute as master process
The checkbox to Execute as master process can be checked if the process does not involve intensive processing on the server side. Setting this means that the process will always be run on the Master server. For a single server setup, this has no effect. However, in a system with execution nodes, checking this option results in the queue being effectively by-passed, as the job will be run directly on the master server. This choice will usually only make sense for tasks that require little RAM or cpu. Jobs run this way should will not actually block the queue - they just run as a master process.