Saving your selection is simple and can save a lot of time. Works with vertices, edges and faces.

1. Select your object.

2. Press the Tab key to get into edit mode on your object.

3. Select either Vertex (shortcut – 1), Edge (shortcut – 2) or Face (shortcut – 3) selection.The numbers located just under the F Keys and not the Numpad keys

4. Mouse left click on the segments of your polygon object.

5. Click on the Object Data icon tab.

6. Under the Vertex Groups click on the + icon to create a new group.

7. With your selection still activated click on the Assign [...]