As far as I am aware you have to check the settings / preferences for borderless printing in the printer driver. The options available for borderless printing witll be available for specific dimensions.
Regards, Denis: System iMac mid-2015, 5K 27” monitor, macOS10.15.7: LrC 10, Lr 4, Ps 22.0,; Camera OM-D E-M1.
One catch is that your picture will need to be cropped to 8.5x11 in the Dev module so that the resulting picture is the same shape as the paper. Otherwise you will get margins or picture sections outside the paper boundries.