You can modify groups in a number of ways, including changing their membership, modifying their properties, revising the names and descriptions of groups, and removing them from the drawing.
In some circumstances, it is useful to control the order in which objects that belong to the same group are selected. For example, a custom routine that generates toolpaths for numerical control devices might depend on a series of contiguous objects in a specified order.
You can reorder group members in two ways: either change the numerical position of individual members or ranges of group members, or reverse the order of all members. The first object in each group is number 0, not number 1.
Change Group Components, Name, or Description
With the Object Grouping dialog box, you can specify objects to be added to or removed from a group at any time. You can also revise a group's name or description. If deleting an object or removing it from a group leaves the group empty, the group remains defined but without any members.
You can delete a group definition by using the “explode” option in the Object Grouping dialog box. This operation is not the same as exploding a block, hatch, or dimension. Objects that belonged to the exploded group remain in the drawing.
As a result, the group is disbanded but the members are not changed in any other way.