The default site is automatically selected on the AppDNA Logon screen, but you can select a different site to use when you log on if necessary. However, if you use integrated or automatic login, the Logon screen is not shown. If you want to change the site on the Logon screen, you therefore need to switch off integrated or automatic login in Login Settings in order to make the Logon screen appear. Alternatively, you can switch site while working in AppDNA by using the Switch Site pop-up list in the lower left corner of the main AppDNA screen.
This removes the site from the list of available sites to connect to.