In the Machines and Materials tree, select the copied material group to copy.
The Copied Material Group is set as green color in tree.
Right-click and then select Copy.
Select the technology under which to place the copy of the material group.
Right-click and then select Paste.
The software copies all levels under the material group, which is set.
To rename the copied material group, right-click and then select Rename, or just click the material group name on tree.
To insert material group like this, a user must be sure the base material group exists on the technology level. This is not the recommended way to insert this kind of material groups.