add scroller to template with php

Yes; taken from the plugin front page:

You can now use parallax scroll in your themes, using PHP. Using this method, there is no need to add a shortcode to a page or post; just simply paste the following PHP code into your PHP page where you would like your parallax to display. This method is especially usefull if you are having trouble with full width, or you would like to build it into your theme.

echo do_shortcode(‘[parallax-scroll id=”#”]’)
Where # = parallax ID number

I tried to add the code above to the page.php but it didn’t work. Could you please tell me where I need to put it?

I would like to add a parallax image just below the main menu like in the Storefront demo: https://demo.woothemes.com/storefront/

Here is my website: https://jobbesh.co.nf

Thanks!