How to extend counter over eating area

[KLSmith]

Hi - I am using CA Home Designer Interiors. When I used HD Pro, there was a selection for counters in the cabinet drop-down menu. You could also drag the counters to extend them. I can't figure out how to do it in Home Designer Interiors. I have an island that needs an 18" overhang over the eating area. Anyone know how to do this?

Bradley-Davino built ins.plan