Even though the wait in a waiting room seems interminable, patients do get called in. The trick, as a sketcher, is to choose a subject that has a long wait, or whose time in one place can be predicted. The gentleman on the right was getting ready to leave, so I had a good idea of the time constraints. I used the blind drawing technique to capture the essential features quickly.
I was surprised by the departure of the subject on the left. I was not able to capture her face and did not remember the features enough to carry on without her being present.