After activating Maltego, the startup wizard will ask you to install default content from the Maltego Transform Server.
By default the public server will be used. If your company has purchased a private server then you can enter the hostname or IP address of that server.
Selecting Maltego Public Transform Server will install Transforms, Entities, Machines and other Transform configurations from the Maltego Public Transform (CTAS) server.
After clicking Next, the Transforms will be installed. When the installation is done, you will be shown a summary similar to the below, describing the items installed to your Maltego Desktop lient.