On Bookwhen, you can restrict how far into the future a booker can transfer a ticket to a new event and also whether multiple transfers are allowed for the same ticket.
Firstly head over to Settings from the left-hand menu, then select Booking Preferences:
Select Edit on the Cancellation section, then tick the Allow ticket date transfers checkbox to view and amend your transfer settings:
Transfers allowed until - This is the period that transferring is allowed before the start date and time of the booked ticket. You can set this as minutes, hours, days, weeks or months.
Restrict transfer window to - This setting is how far into the future a booker can transfer a ticket from the date of the booked ticket to a new date. You can set this as minutes, hours, days, weeks or months. For days, weeks or months, an additional box to the right appears to select the time of day as well. Either box can be left blank to apply no restriction.
Restrict to one transfer per ticket - Ticking this checkbox restricts your bookers to have the ability only to transfer their ticket once. Leaving this unticked, the booker can then transfer their ticket multiple times.
Allow transfers to different events or ticket types - Ticking this checkbox allows bookers to transfer their tickets to another event or ticket on your schedule from the originally booked ticket.