How to schedule this type of calendar item?

Tribal wisdom in my organization is that if I will be unavailable during working hours I should create a meeting of my calendar, shown as "Free," and an appointment shown as "Busy" or "Out of office," etc. The meeting makes Outlook notify the people I work with. The appointment warns others not to schedule a meeting during that time, and I can also use it to make private notes about where I'm going, etc.

I'm puzzled about how to handle a period where I won't be away, but some point I'll have to deal with a repair person, landscaper, etc., who is coming to see me. In other words, I want to convey the message "If you need me I probably will be there, but don't schedule any meetings." What would be the best way to do this?