Hey Mike, If you want to set a default order for your table you do it in the advanced properties for the model the table is using. 
1. With the model selected, open up the Advanced Properties pane. 2. Enter the field you’d like the model’s records to be ordered by (it’s basically a SOQL ORDER BY clause without the “order by”). Then, if you want your users to be able to change that order at runtime you can set the allow ordering property for the date field. 
1. Select the field within the table. 2. Check the Allow Ordering property. Then you should end up with something like this with the ordering arrows on the table already set to your default order by: 
