You will need a link from your IDX provider. It may look something like this: http://myname.idxbroker.com/idx/map/mapsearch
Click “Pages” in the sidebar. Then “New Page” followed by “Page URL.”
Enter a title for the link and the URL from your IDX provider. Then click “Add page.”
You can rearrange the order of the menu to put the new link wherever you want. You can also click the gear icon on any link to change its current options.
Republish your site to make the changes live.