I take it you are planning this for taster sessions? When I do these, I start with a bit of relaxation massage, spine twist, etc and while I'm doing this I will ask them if there are any areas they'd like me to focus on, any health problems, while explaining that I cannot give a full treatment in this short time.
Usually they give you something to work on, but if not I usually just work the toes and down the spine.
Then I will usually end the taster with some more massage and a solar plexusor adrenal balance.
Good luck!
Sarah x