How can I edit multiple primers at the same time?
Select the Primers

Select multiple primers. To open the Edit Primers dialog, click Primers → Edit Primers.
Specify the Changes

Choose the color, phosphorylation, and font case for all of the selected primers, then click OK.
View the Updated Primers

All of the selected primers will now have the specified changes. In this example, the color of the primers is changed to red, as shown in Sequence view.

In Map view, a circle shows the updated color of the primers.