When you have saved your new client, the main "Client" Page will appear. This page provides information about the client and lists projects and client-side users (who will access the client site as opposed to the team site). You can edit the Client Organization's "Details" by clicking on the on the Edit button in the "Client Organization" Page or by selecting the checkbox next to the client's name in the "Clients" list on the "Client Organizations" Page and then clicking the Edit button above the list.