You can find the menu on the printer's control panel below.
On the Web Config screen, you can find the menu below.
Fax tab > Send Settings
An A4 size original placed in the ADF or on the scanner glass with its long edge facing to the left is sent as an A3 size fax. Enable this to rotate the scanned image to send it at A4 size.
Set the time to wait for the next original. The printer starts sending the fax after the time has passed.
You can preview the scanned document for a set time before sending it. The printer stars sending the fax after the time has passed.