Add pop-up window in the web model

I would like a pop-up window to appear when I open a certain page. Similar to the "normal" Internet, e.g. when I open the free page of an online newspaper, an advertising window opens on the page.

I would like this to look like screenshot 2, so that I can see a KPI window that graphically displays my key figures live. A simple traffic light display with red - yellow - green (screenshot 3) would be enough for me. It is important to me that it is not the status from the last export, but the current status - which I obtain from an MS Teams source from Sharepoint, for example.

At best, as with advertising, I can access this file by clicking on it.