How to add many tags to Yandex map?

Question

JavaScript

Hello. The second day I fight over what would seem to be the simplest question. I want to display my own marks on the Yandex map. But for these labels, I want to set my own html (it's trite, insert the picture into the balloon, the button is more detailed). https://tech.yandex.ru/maps/jsbox/2.1/object_manager has the ability to create many labels in the
Yandex sandbox . And there is also https://tech.yandex.ru/maps/jsbox/2.1/balloon_html adding a label with its own html. But in this example, you can add only one label, which is immediately open in full screen. And if I try to add html to an example with multiple labels - they break the map...