Thanks @Seth_C_Bauer I understand the slicer and tried to come up with a nice way to configure it to only display the last 7 days out of 3 years of dates. For example, I can create a query that "Filters Rows" on the date column using "in the previous 7 days" and it will create a nice sub-set of data for the last seven days. I could use that query in my report but I'd rather the logic be in the slicer and not create another query that needs to be maintained.
I was hoping to have a Power BI tab that is using the same 3 year dataset/query but filter for the last 7 days. Avoiding the need to have 2 queries and the need to update the dataset to get the correct data.