Create and edit master features directly in the Releases > Gantt chart

I'd like to be able to create a master feature directly in the Releases > Gantt charts. This will save me from going to another tab to create a master feature, then creating a feature underneath that, and then refreshing my original Gantt chart.

Basically, I want to be able to create master features in the same way I can create features in the Releases > Gantt chart.

Thanks!