Select the dimensions to be lined-up.
Right-click and select Line-up, or select
Tools > Positioning > Line-up from the menu bar.
Select the element that will be used as reference for
positioning dimensions, as show here:

The Line Up dialog box appears.
Enter the desired value for the offset to reference.
For example, 20in.
Enter the desired value for the offset between dimensions.
For example, 30in.

Optionally, select Align stacked dimension values
to align all the values of a group of stacked dimensions on the value
of the smallest dimension of the group.
Optionally, select Align cumulated dimension values
to align all the values of a group of cumulated dimensions with respect to its orientation reference.
Note:
The values are aligned only if their orientation reference is the dimension line. You can define this parameter through Tools > Standards > Drafting > [StandardName] > Dimensions > Cumulate Dimension: Value Orientation Reference. Refer to Dimension Parameters for more information.
Alternatively, you can edit the dimension system properties to change the dimension values alignment. Refer to System Tab for more information.
Make sure the Only organize into systems
option is not selected.
Click OK to validate.
The smallest dimension is positioned with an offset
of 20in according to the selected element. The offset between each dimension
is equal to 30in.
