How to implement a video consultant on the site?

Question

Video

Good afternoon!
There was a task to develop a consultant for the site. That is, in theory, it can be something like any SaaS solution (like Live Site), but it must have a video consultation function. To put it simply, you need Skype. That is, it should be possible to communicate through webcams and the ability to share a screen (or a specific web page).
Sample situation:
A person went to the site and clicked on the "Video consultation" button. Our manager received a call, he answered it and then regular Skype (only in the browser).
Ideally, the solution should be entirely on the web, at least the user (who has accessed the site) should not install anything, etc.
I'm interested in which technologies to look at and (it would be cool) what existing solutions are (SaaS, OpenSouce).
UPD. I edited the question after the first replies as I thought I needed to develop my own. This is done for a system, most of the meaning of which will consist of this video consultant, so it would be foolish to rely on SaaS, for example.
Hope it's not too messy. I really appreciate your advice, thanks!

Answer 1

onlinesaler.ru/tarifyi.html
is this option not suitable? there is a video connection ...
In general, I googled this option for the query "video consultant on the site" - I advise you to try it too. There is such a site - google.ru