1. Yes. You can edit the view and filter on any of the available columns in the events list. 2. Yes and Yes but not with content approvals. You would have to utilize Power Automate flows. 3. Sync is very basic and I don’t believe it really works anymore tbh. Even when it did it’s only for build in calendar entries you cannot pull over the custom categories names or other columns into Outlook and sync is PC only when it did work.