Hi,

I have exported the groups for objects with similar materials and i want to use the same group inside of houdini for calling them to material node.

I tried selecting the group and then using a delete node for isolating the specific group but that is really a long process.
So is there any easiest way of doing so?

Drop down a Material node, connect it in and any groups that already exist on your geometry should be shown in the drop down list. Select a group from the list then choose the material for that group. You can add multiple materials on a single Material node so you only need one.