There doesn't appear to be a Work Environment Preset for the MEP Tools. The manual refers to a "MEP Engineering Profile" which isn't present in the USA version.
screenshot shows only two profiles on offer and MEP isn't one of them. I'm looking at AC 28 Build 4001.
Think Like a Spec Writer
AC4.55 through 28 / USA AC27-6010 USA
Rhino 8 Mac
MacOS 15.2