How can I go since a button en mango UI to alarm report?
Link from dashboard to Alarm report
I don't really understand what you're asking. What alarm report? The events page? There should already be a menu item for that, and you can enable that page if it is not in the "Edit menu" section of administration. If you mean a different page, I suspect you will want to create a menu item with an external link to the page, as is going on in this thread: https://forum.infiniteautomation.com/topic/3344/edit-menu-to-access-legacy-mango-pages which would also happen in the "Edit menu" portion of the administration menu.
I have this dashboard:
I would like that if I do click in the "Panel de eventos" button, this show this panel:
The problem is that when I configure the button, I don't have this option. I have only the option of ui.events
You have created that dashboard in the Dashboard Designer, yes?
If you create a menu item as described in the thread I linked to, that menu item will appear in the list of pages for the button to link to, even if you don't have it displaying in the menu.