Hi Carol,
Thank you for giving us a review about the air fry feature of the Samsung Range.
You can check the user manual on this link: https://downloadcenter.samsung.com/content/UM/202107/20210716111032090/NE63T8751_AA_DG68-01208A-05_EN-MES-CFR_210702.pdf. On page 41 you can check the steps to set the oven for Air fry mode.
If you have inquiries or need further assistance, you may contact us via the following options:
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
Ticket number: 1144775083
Thank you for choosing Samsung, and have a great day!
^Rainly