Final answer:
To toggle the 'Request Radio Call' button on, you would typically select the inbound flight and access the communication section within flight management or air traffic control software to enable radio communication.
Step-by-step explanation:
The process of toggling the 'Request Radio Call' button after clicking 'Aircraft Request' in the inbound flight would typically involve a series of steps within the flight management system or air traffic control software being used. While the specific steps can vary depending on the system, the general process would be to select the inbound flight from a list of flights, then access the communication or radio section where you can find the 'Request Radio Call' button. Once there, you can toggle the button to the 'on' position to initiate a radio communication with the aircraft. This action alerts the flight crew that air traffic control wishes to communicate with them.