Hi,
How do you group selected faces with Group Node?

The Group Node needs an input but what if you already selected the faces and don't want to lose the selection and want to group it to do further operation?
In this case before you create the Group Node.

Any trick to do this?

Or at least you can copy the Primitive numbers so you can input them in the Group Node?

Ok found the solution here:
http://houdinihelp_rus.houdinibook.ru/nodes/sop/group.html

You can click on the group icon on the Model tab.

You can also hit Tab in the viewport and apply a Group SOP (or other SOPs) from there. It will fill in your current selection.

DaJuice
You can also hit Tab in the viewport and apply a Group SOP (or other SOPs) from there. It will fill in your current selection.

Yes that's correct!
But not in the network tab!