Calc Form creation

I am being thick today, I want to create a form in Calc, the Help page states click the Form icon, but there is no picture of a Form icon and if I hover over the various icons, there is no Form icon. I know this should be simple, but how do I find the Form icon in Calc?

menu:Data>Form… is a highly questionable feature.
I don’t know which help page you refer to. True input forms are a database feature.