I am the director of a program on my career school campus. I also share an office with another program director. Our programs are unrelated, but we both have large class sizes, thus many student issues. We also share one phone line, because of the location of our office. Our company has an open door policy, basically stating we are "never to busy". One of our company's major values is helping our student achieve their goals, and treating our students as "customers". This has particularly become very challenging given the shared office, phone line, and lack of extra space due to a recent campus merger. At any rate, I have lots of student questions and concerns, throughout the day, that I am willing to address...whenever my students need me....but sometimes its a hassle in the moments I need the door closed to accomplish tasks, and the other director needs it open to be available to is students, yet my students are passing by, seeing me and needed something......how do I not address their concerns/issues without seeming rude, or uninterested in their needs, and not disrespecting/disrupting my office mate?