Here's the MS docs: BCDEdit Commands for Boot Environment
as for the Gui I don't know if they have help. I'd have to look through it same as you.
I would search on whatever params you were trying to use initially.
I tried to find bcdedit.exe download on MS site but had no luck. Did you search your entire drive for the exe file?
Also I would think that the Gui utilities depend on bcdedit.exe being there. The install or running to get info should display an error if the command line exe is missing.