This button enables you to copy several bookings at once. First check the boxes of the bookings you want to copy and then click the button. A specially adapted Booking form opens in which you can modify the fields according to the new requirements. Check the box on the left-hand side of the fields you want to modify. The modifications you make apply to all the bookings that you have selected. Fields that you do not modify remain the same as in the original bookings. Note: when copying bookings you need to modify at least one of the fields in order to avoid conflicts with the original bookings. Tip: in More options -> Grouping you can check or uncheck the box: 'A multiple bookings operation only modifies the selected events of a booking series', as desired.