‘First Available’ is a filtering option in perspectives, which includes only the next action from each project (except from Single Action Lists, SAL).
Therefore you can get pretty close to the objective by creating this custom perspective:
not contained in projects which are SALs (you need to select them manually in the popup)
Group and sort: Entire Projects
This will require selecting the desired tag in the perspective rule. Then you can click on any project in the sidebar to see just its next action in the outline (if it has parent actions they will be displayed too).
Alternatively, you can use the ‘Individual Actions’ option in the perspective with group by projects, click on a tag in the sidebar, and see project groups each with its single next action.
Wonderful, thanks for the responses @MultiDim and @wilsonng. In the “View” dropdown, I notice that there’s an option to “Focus …”. Is there a way for me to focus on a single next action for a project then hit some keys (so to speak) and move to the next item in the list.
So the outcome is that, I am only viewing one next action at a time?
My favorite method of focus is to take 3 Post-It notes and write one task on each note. Then hide The OmniFocus app or put away my phone. Then place the 3 notes at the bottom of my computer monitor. Then I work off of those.
It’s always visible in front of me.
I’m not a fan of keeping my task manager window visible on my Mac or having my phone displaying my next task. It’s too easy to just get out of a card view and search for something else.
Using the 3 Post-It notes gives me all the focus I need.
I focus on those 3 notes. When I’m done, I take a break. Then I take out another 3 Post-It notes and choose another 3 tasks for my next time block.