Yup. Pull the furling line off the drum to roll the genoa up and cleat the line. Uncleat the furling line and pull on the genoa sheet to unfurl (the furling line is then pulled back onto the drum). Keep a little tension on the furling line when letting sail out to keep the line from getting into a mess on the drum.
When at anchor or mooring I also put a tie around the rolled genoa to keep it from unfurling in a storm.