Using the FOG Boot Menu
The menu and its entries are substantially the same on both versions. 1.6 renamed this page from Client Side Tasks, and the Enroll Secure Boot Key entry — which originated in 1.6.0 — has since been ported back to the 1.5.x line, so it is available on either version.
Which version am I on?
Check FOG Configuration → FOG Settings → General → FOG_VERSION in the web UI, or the version string printed at the top of
installfog.sh.