Marking multiple sketch items as for construction

Hi

I've just updated to SW2010.

I'm creating a sketch from edges of another part, and then want to offset some of those sketch entities to creat my new cut sketch. What I have done in the past is:

Select face/edges, convert entities, while they're all selected, mark "for construction", then use those construction lines to offset from, be parralel to or whatever.

Now SW2010 seems to not allow me to set multiple selected items "for construction". The panel appears, but when I try to move the mouse pointer to it, it dissapears and is replaced by a singel "show selection" buton, which doesn't seem to do anything useful.

How can i set multiple items to "for construction now?

thanks

Graeme

SolidworksGeneral