Need help with page customization

I’m using version of OOD 3.0.3 and trying to customize pages to some needs.
I copied some html page files from /var/www/ood to /etc/ood/ and edit them, but it’s not enough for javascript elements.

Don’t understand how to edit some of them (example in the pictures below)

  1. Files page

  2. Jobs page

And other pages with javascript elements.

Please advise which files need to be changed.

There is an entry point you can use to include your own files: ondemand.d/*.yml files — Open OnDemand 3.1.0 documentation - Search for custom_javascript_files. You can include those in your dashboard. Would this help you achieve what you’re aiming to do?