How to set a metric on a closed site?

Question

Yandex.Metrica

There is an educational portal based on educational products from gisoft. You need to install some of the analytics systems on it, but the problem is that it has an atypical structure for the site. The screenshot shows. As I understand it, its main templates are generally closed in bin files. Is it possible to somehow install a counter on it or is it a dead number?

Answer 1

In general, there was one JS file that was connected to almost all portal pages.
I put the metric code into it.

Answer 2

Yes, site clients must have Internet access so that the script can send statistics.