The demo source code contains a DIV wrapper element and an iframe to integrate the player into a responsive website.
Check out the simplex Player - Embed and publish documentation for further information about embedding and publishing videos.
Check out the simplex Player - Parameters documentation for further information about using parameters.
Add the options to the select dropdown and define the value for each option (customerID, authorID, projectID).
Test the functionality in the environment that has to be supported (Device, OS, Browser).
Contact the xtendx Support with any questions or suggestions: firstname.lastname@example.org