To create a smart set of models created after a certain date follow the below instructions.
Click on Inventory
Under the View Models area Select New SmartSet Query
Name your smart set as per your needs.
Select the columns you want displayed like Time Created, Model, Description, and what ever else you may need.
From the drop down menus select Time Created, is after, then select the date you require.
Click Test Rules to view your results or choose Save Smart Set to save this for future use.
Once your smart set is saved you can sort by Time Created to order your results as per your needs.