Dremio job workloads are managed differently depending on which edition (Enterprise or Community) you are using.
Workload Management - Enterprise Edition only
This feature provides advanced capability to manage cluster resources and workloads by defining a queue with specific characteristics (such as memory limits, CPU priority, and queueing and runtime timeouts) and then defining rules that specify which query is assigned to which queue.
Queue Control - Community Edition only
This feature provides basic capability to manage query queues, reflection queues, query memory, and query thresholds.