I have been constantly fighting with this situation - my work demands me to be there full 8 hours, it is a small office where I am scared of booking an interview room and giving an interview - I could be heard. Companies who want to interview want it in those 8 hours duration as well. I have been setting up interviews really slow due to this reason as I cannot have an "appointment" every other day - which leaves me with very interviews at hand. How do you guys plan?