As your drawing diagram changes and requires updating through time, you can easily add new shapes to existing groups. The add new Shapes feature keeps you from having to ungroup all current groups you need to add to, and simply adds the new shape to the group.
To add a new shape to an existing group, follow these steps:
Select the current group.
Select the new shape.
From the Shape menu, click Grouping, and then Add to Group.
The new shape is now part of the group.
Removing a shape from a group withdraws it from that group relationship. Selecting the specific shape within a shape group can be a tricky process. Follow these steps to remove a shape from its shape group:
Select the shape group.
Select again, the ...