The Gateway Services Properties dialog box appears.
The gateway.toml File dialog box is displayed.
If you select a configuration file that uses a port that is already in use, a message is displayed informing you, and you must either change the port in the selected gateway.toml first, or choose another file. The check for existing gateway ports covers both 32-bit and 64-bit control panels, so if the configuration using the port is not showing in the current control panel, it will be in use through the other control panel.
The service is saved, and displayed on the main Gateway Services tab.