That depends on the person. If your coworker is someone who requires pre-planed meetings for any type of interruption, you'd know. Oh boy would you know very qu

That depends on the person. If your coworker is someone who requires pre-planed meetings for any type of interruption, you'd know. Oh boy would you know very quickly. I usually only feel bad for the cleaning or mail staff, but you and I would immediately know those people. Otherwise, most other people are either available, or will tell you when they are not and you can easily say back "no worries, ping all of us when you're done" and everything moves 100% more efficiently.