Outlook Sync Exclude Color/Category

I would like not only calendar visibility options, but also the ability to hide categories within a calendar.

My work handles out of office via calendar invites, and I accept them to put them on my calendar, but then categorize them with a specific color to differentiate it in Outlook so I know to ignore them in that UI. I can't put it on a different Outlook calendar because then it doesn't work in Exchange correctly.

However, now it shows up in Akiflow as a normal event for me, and while it is the correct color, I'd prefer it to just not show up at all.