On the Service Workspace accordion, in the Administration expander, click Parts.

In the workspace, open specific part record to which you want to de-associate part catalog.

On the Part docked split container, in the Details node, click Vendors.

In the workspace, select appropriate catalog from Associated Vendors list and click to move the catalog All Vendors to list.

Remove more if necessary.

On the Service Workspace accordion, in the Administration expander, click Parts.

In the workspace, open specific part record to which you want to associate vendor.

On the Part docked split container, in the Details node, click Vendors.

In the workspace, select appropriate catalog from All Vendors list and click to move the catalog to Associated Vendors list.

Add more if necessary.