this is an SW thing as I do not use Inventor or Fusion.
Currently you have to either RMB on a job and find the make default or hot key combination (which I never remember).
What I am suggesting is if you click and highlight the job and then select an operation it automatically makes that job default kinda of like the way SW allows you to preselect a a plane and then select a sketch feature which in turn automatically opens a sketch on that plane.