Function in control rig blueprint

Hello everybody,

i have a questione about control rig blueprints. I watched a videos about FullBodyIK Locomotion, where him create a function in control rig blueprint (first picture), but when i replicate it, i can’t create a function (second picture). How it possible risolve?

Looks like functions in Control Rig blueprints might be a feature of UE5 only?