If you had previously deactivated a notary and would now like to reactivate them click on "Admin" in the upper right corner and "Notaries" in the drop down:
On the page that opens us the search function in the top bar to find the notary you'd like to reactivate. The drop down can be used to select a search method:
From there, click into the notary's profile and scroll to the bottom of the page to Reactivate.
In order to reactivate a notary that has been deactivated for a specific client, just click in to the clients profil (Admin>Clients), and scrolling to the bottom of the page where there is a list of deactivated notaries. From there, you just click "Activate"!