Generic aromatic or heteroaromatic wildcard in Marvinsketch

Dear All,

Is it possible to construct a query using a wildcard for aromatic rings, both carbo and hetero? Something like aryl-O-aryl? I see Carboaryl under Insert -> Groups but it doesn't seem to work. If it's not yet available, how does one define a wildcard that represents 5- and 6-membered aromatic rings (carbo and heteroaromatic)?

Thanks.