Location: From the Menu Bar, select Mesh Editing > Detach Elements.

The Detach Elements option lets you detach elements from a surrounding structure.  You can detach elements from a portion of your model so that the model can be translated or moved, or you can offset the new nodes by a specified value.  You can also use this feature to detach and remove elements from your model. To learn more about the concept of detaching elements, see the Detach Panel in the HyperMesh User's Guide.