I'm currently setting up some NUC's to work with touch screens for an vendor project I am working on.
One issue I have come across is finding an option to show an on screen KB on the Bit locker start up screen. I have dealt with other tablets in the past and was able to find a solution.
could you point me in the right direction on how to get this to show. I have activated all relevant GPedit options so from an OS point of view all is ok.
In regards to your inquiry, basically on the NUC you have the option of enable or disable the Bitlocker feature on the BIOS, that is all you need to do in regards to the NUC itself.
For the BitLocker requirements you can visit Intel® NUC Boards and Kits — BitLocker* Requirements for most of the NUC's.
If you need additional assistance about the program you're using the best thing to do will be to get in contact directly with Microsoft since is a feature offered by them.