Add this Addon and activate it from the plugins.
Goto Listing CPT (Places or any other custom CPT) -> Settings -> Tabs
As shown in figure click on Shortcode to add as tab. So it will be added at right side.
Then click on shortcode to configure it. Give the Tab Name as required. Click on add shortcode as shown in the screenshot.
Then It will pop up to select the shortcode from the select Options. Here you can select Listing Enquiry Contact Form 7 or any other form which are supported by our addon like Gravity Forms, and Ninja Forms.
Then select the form you want to display as an Enquiry form at the front side.
Then click on the Insert Shortcode and It will be added in the Tab Content field.
Then save the tab.