In OfficeMate v9 and above, highlight the insurance plan in the table at the top of the Patient Demographic window (Insurance tab) and click the up and down arrows on the right side of the table to move the insurance plan up or down the table. The patient's primary insurance should be in the first row, the secondary insurance should be in the second row, etc. To mark an insurance plan as being inactive, select it and then select the Deactivate check box.
In OfficeMate v8 and below, you must delete the insurance that you want to change and then re-select the insurance information in the appropriate (primary or secondary) location in the Patient Demographic window (Insurance tab). You are not able to mark an insurance plan as being inactive.