As it is visible in the left side screeshot, This module essentially provides us a very usefull feature where we can give a auto reload value in secods in the action code as per required and as per that value given in the action code, that web page will be refreshed.

Automatically reloads the waiting queue web page every 5 seconds.

Here 5 seconds of refresh interval is there which can be changed from the edit action option when the developer mode is on of the action of the waiting queue web page.

Refresh at a specific time interval.

Automatically reloads the chairs availability status in the front end of POS every 5 seconds.

This will ensure that as soon as a chair is available it becomes available in the front end which enables for the user to assign available chairs to new customers and new service can commence.