Visiting Time.

Do you get a lot of visitors to your studio?
Great to be popular isn't it?
Sales people with ten minutes to kill, office staff popping in to shoot the breeze.
They look in the studio and see you there staring into space and figure you're not busy. Chat, chat, chat.
In your studio. Your office.
Unscheduled visits to your office are a disruption. Plain and simple.
They distract you.
Yes, you're staring into space. That's what people do when they are thinking. Thinkng is a very important part of your job. Disturbing that, disturbs you and that disturbs the sound of 'you' on the radio station.
No one wins in that situation.
Life is a series of small events and decisions. The more there are, the bigger the impact. One sloppy link can become one sloppy hour/show/week...
You respect people in their offices. You let them do their job.
Let them know that you need to be allowed the space to work in yours. Your way.
No visitors.
It's your career.
Treat it well.