Ryanair's Manage Reservations tab is a feature that allows passengers to manage their flight reservations and change their itinerary if necessary. This tab allows passengers to quickly and easily access information about their flight, such as departure and arrival times, flight numbers and seat assignments.
Passengers can also use the “My Reservations” tab to make changes to their reservation, such as adding checked baggage or selecting a different seat. They may also change their flight dates, times or itinerary, if necessary, subject to availability and applicable fees.

How do I edit the flight booking in RyanAir's Manage Booking tab?
Passengers can make changes to their flight reservation, for example by changing the flight date or time, adding or removing passengers, or switching to a different ticket type. Under the RyanAir Manage My Booking flight change tab, you can follow these steps:

Access the Ryanair website: Visit the Ryanair website and log in to your account.
Find your reservation: Go to the “My Reservations” section of the website and locate the reservation you wish to modify. Enter the reservation details such as reservation number and email address in the required field.
Select “Edit Booking”: Click the “Edit Booking” button next to your flight itinerary.
Edit your flight details: Select the new flight details you want and continue the process. You may be charged a fee for making the change, which will be displayed before you confirm the change.
Confirm Change: Review your new booking details and confirm the changes.
Get your updated itinerary: After confirming the changes, you will receive a new itinerary with your updated flight details.

How to check the flight status for a Ryanair plane ticket?
Passengers can check the status of their flight, including departure and arrival times, as well as any delays or cancellations via Ryanair's Manage Your Booking tab.
You can check the flight status of your Ryanair booking online by following these steps:

Go to the Ryanair website (www.ryanair.com) and click on the “My Bookings” tab.
Enter the passenger's reservation number and email address.
Once you access the reservation, click on the flight segment then select the “Flight Status” tab.
Enter your flight details, including departure date and flight number.
Click the “Search” button to view your flight status.