Add, redefine, or remove the associativity between dimensions and the objects that they measure.
Associate or Reassociate a Dimension
-  Click 
		

.  Find 
	  - Select one or more dimensions to associate or reassociate.
 -  Press Enter and do one of the following: 
		
- To associate the dimension to a specific object, enter s (Select object) and select the geometric object.
 - Select the reference point on an object, using object snaps as needed, to associate the indicated extension line.
 
 - Repeat steps as needed.
 
Disassociate a Dimension
- At the Command prompt, enter DIMDISASSOCIATE.
 - Select one or more dimensions to disassociate and press Enter.
 
Control Whether New Dimensions Are Associative
-  Click Application button 
 Options. 
	  - In the Options dialog box, User Preferences tab, under Associative Dimensioning, select or clear Make New Dimensions Associative.
 - Click Apply or OK.