How to set read-only permission to the single node

I was trying to put the read only permission to the single node in the diagram.
Is it possible ?

What would that mean?

I suggest that you instead set or bind all of the desired permission properties on the Node. Most of them are documented on the http://gojs.net/latest/api/symbols/Part.html class. They are discussed at http://gojs.net/latest/intro/permissions.html.

I got the solution, Thanks Walter.