Update Omnifocus Reminder from Calendar App

I use BusyCal which integrates well with OmniFocus. I get my omnifocus reminders shown on my calendar.

I try and schedule time for tasks during my day/week, so I’d like the ability to move tasks around in the calendar, give them a duration, etc. Currently when I try and move them, I get an error: You don’t have permission to modify events on the calendar “OmniFocus Reminders”

Is this something I can resolve, or is this just not possible.