As you progress in your quest for Web Worker status you need to accept the concept of Web-based collaboration tools.
The first such tool to adopt should be your Calendar. You may eventually have several, each with its own purpose. In this part of my little dissertation, you will learn how to manage both a shared and a private Calendar.
Google Calendar
Sharing your Calendar and giving access to your office staff will solve a lot of scheduling problems. Your Calendar can have items from several calendars in it and you will never be lost or go AWOL ever again and you will know what other people are doing.
Security Issues
The first decision is who will have access to you Calendar.
If your office staff and others will have access to your calendar, then you may want to set-up another Google account for the calendar into which they enter events. This calendar is shared, which means its events will be visible in your main calendar. This is not entirely necessary but it divorces the shared calendar from your email archive. You can also share events that you place in your personal calendar with the one you office staff use to enter events for you.
The events entered by other people can then be Copied to your calendar as your own so that you receive notifications of your agenda and individual events entered by other people. You should look at your calendar every day for items added by other people.
It just sounds more complicated than it is. You just have to devote set times during the day to answering email and reviewing your calendar. I do this at 11am and at 4pm daily.