GROUPS TAB
The Groups Tab gives you access to all the operations you can perform with the groups of your current model. The Groups Tab buttons may be active or dimmed. If the button's function is not available, the button is dimmed. To activate the buttons you must first select a group from the Group list.
Delete: Delete a selected group.
Rename: Rename a selected group. A dialog box will appear where you can enter the new name of that group.
Group List: Gives you a list of all the groups in your current model, along with the materials assigned to each group.
Hide: Hides the selected group.
Unhide: Unhide the selected hidden group.
Regroup Selection: Combine all selected objects in a new group.
Assign Material: Lets you assign a material to a group. First select a group in the group list, and then click the Assign Material button. Choose a material from the list of materials (shown below) that appeats at the bottom fo the Groups Tab and click the OK button.