To connect to a server using pgAdmin3 on Mac, you need to follow these steps:
1. Open pgAdmin3 on your Mac.
2. In the pgAdmin3 interface, click on "Add a connection to a server" (it looks like a plug icon).
3. In the "New Server Registration" window, enter a name for your server connection.
4. In the "Connection" tab, provide the necessary details such as hostname/address, port, username, and password for the server you want to connect to.
5. Click on the "Save" button to save the server connection details.
6. Now, you can connect to the server by double-clicking on the server name in the pgAdmin3 interface.
Make sure to enter the correct server details and credentials to establish a successful connection.
