Hello. Thank you for contacting the Toolset support.
The Doc link you shared is the correct link. May I know where exactly you stuck and where you require the help.
It seems you want to configure the distance search. If you want to see that in action, you can see that in action with our reference sites we offer as our free test platform where you can learn it how it is configured.
You can create a free test site on our free test platform http://www.discover-wp.com and create a test site for any offer the reference site we offer.