I know it is a silly question, which have an easy answer, but I can't seem to figure how to do it?!?
Thanks

After creating your ramp and promoting it, click on the little gear icon on the top right corner of the node. You will see an option called Save Preset, click on it and give it any name, eg: Ramp, and save it.

Thats pretty much it!

of course, it was that easy. thanks man for the time.