How do I get actions to appear in the iOS Apple Calendar with OmniFocus 3 (not calendar events in OmniFocus timeline)?
Instructions for OmniFocus 2 say this can be enabled in settings, but I don’t see it in OmniFocus 3, and I never tried it in OmniFocus 2 since I was waiting for tags before moving to OmniFocus.
Unfortunately, this feature has been discontinued with OF3. However, you can keep OF2 running alongside your OF3 installation and set OF2 to create the iCal calendar integration file.
Long time ago, I did a workflow for creating calendar events from actions: Automation/Integration: Here's how to create a Calendar event from OF2.15 using the iOS App 'Workflow'
Still use it regularily. Maybe it would help you, too?