Dimension Groups (2D)
Edit
Dimension (Drawing Sheet Level )
Dimension groups are created when the Baseline, Continuous and Ordinate dimension modes are used. The following commands can be used to add to and remove dimensions from these groups.
Inserts a dimension into a group. Select a dimension in the group and then specify a point to add a dimension to.

Remove Dimension
from Group (2D)
Removes (deletes) a dimension from a dimension group. Select the dimension to remove.

Explode Dimension
Group
Use this command to explode a dimension group back into its individual dimensions. First select the dimension group and then middle-click to explode it.