Settings > Hosts
MAMP PRO uses virtual hosts to allow your web servers to serve different websites. You can add an unlimited number of hosts, allowing you to create one host per project. Each host can have it’s own directory to store HTML, PHP files and images. This directory is called “Document root”.
The name of a host (server name) must be unique, often it’s convenient to use a reverse domain naming scheme to easily identify it (e.g. use info.mamp.development instead of development.mamp.info). The unreversed name may conflict with an external domain name.