I'm thinking that Water or Coffee Break could be useful to try to boost Candace's productivity overall, for longer, future scenarios than this prototype.
Fucking is an intense aerobic workout, so keeping Candace somewhat healthy will help improve or maintain her productivity levels.
You can't exactly deal with when work comes or when her coworkers want a fuck.
The position choice could also affect Candace's ability to work, or how the certain character responds to being serviced by her. I expected someone who wanted Candace's breasts to be better served when her shirt is off.