Round 1:
 
Red Yoga girl
Empty
Red Cellphone guy
Blue Boy
Green Cellphone guy (serve coffee to Yoga girl til this guy arrives, then chain)
Empty
 
Round 2:
 
Red Yoga girl
Red girl
Red girl
Blue girl
Green Black Woman
Purple Black Woman (last to arrive...easy to work her into your chains)
 
Round 3:
 
Red Yoga girl
Red Black Woman
Yellow Girl  (wait for her to arrive)
Empty
Green Girl
 
Round 4:
 
Red Bookworm
Red Bookworm
Yellow Bookworm
Blue Bookworm (last to arrive)
Empty
Purple Bookworm
 
Round 5:
 
Red Cellphone guy
Red Boy
Yellow Cellphone guy
Empty
Green Cellphone guy
Empty
 
Round 6:
 
Red girl
Red girl
Yellow girl (that comes in with blue girl)
Blue girl
Empty
Purple Yoga girl
 
Round 7:
 
Empty
Empty
Yellow Bookworm
Blue Yoga girl
Green boy (and maybe a Green girl) ---*may* come in. You should have enought points for Expert with just the Yellow Bookworm and Blue Yoga girl, though.
 
 

I tried this and I only got Goal I did not get expert...

I always get an expert medal at the end of all shifts...

I did it................Yes....Yes....Finally

This chart worked for me. Thanks