On VPro-enabled NUCs (the NUC7i5DN*E, NUC5i5MY*E and DC53427HYE), it is possible to do BIOS Configuration changes remotely (from a remote Management Console). On non-VPro-enabled NUCs, however, physical presence is required as (partial) proof of your right to make BIOS Configuration changes (the BIOS Administrator's password completes this proof).
The NUC6i7KYK is not VPro-enabled. Thus, remote BIOS configuration changes are not supported.
Hope this helps,