Place one or more parts or subassemblies in an assembly file.
On the ribbon, click Assemble tab Pattern panel
Pattern
.
In the browser or the graphics window, select one or more components to pattern.
To specify column and row spacing, click the Rectangular tab.
In the Column section
Click the direction selector, or the flyout and select an origin axis as the direction vector. Clicking either activates the selector.
If not using an origin axis, select an edge, work axis, or face as the direction source.
If needed, click Flip to change the column direction,
Enter the count (number of features) for the column and the spacing between features.
In the Row section, which has the same behaviors as the Column section,
To associate component patterns with feature patterns, click the Associative tab.
Click the selection arrow. In the graphics window, select an occurrence of a feature in a pattern (not the original feature).
Components are copied in the placement and spacing of the feature pattern. Changes made to the feature pattern automatically update the number and spacing of the components in the assembly pattern.