Auto-Populating Multiple Values Based On Two Criteria Based In Comboboxes

I'm starting a dashboard, where on the front page I have two combo boxes on the left, and three empty fields to the right. I'd like the three fields to the right to auto-populate table-based values depending on the chosen criteria from BOTH fields (by store and month/date). I've attached a sample of what I've got so far. I've only provided three tables for this example, and I have a table with the same column/row titles for each metric and I have three different metrics I'd like to auto populate: COGs, Sales, and GM% or in the example, metric 1, metric 2, metric 3. No pattern in the table values, just wanted to populate the fields quickly. All fields are organized by store/month-date and I've set up a link to my combo boxes on a calculations tab.