Add/remove to sensor based on scrape/rest html data

I am trying to figure out the best way to add/remove alerts into the dashboard I created (pasted below)
based upon data from an html table (Notices). The catch is I only want certain items. The table has 4 columns, two of which I will use to filter the results I want to work with.

What is the best way to add/remove items to a sensor (figure logbook or markdown as best option?) based on the “alerts” that I want to see from the data source?