Hello @dejavunola, welcome to the Seller Community! 🎉

Ordering the Employee Sales report alphabetically is a feature request. I understand why you want this and although it's not available right now I have a work around for you. 

You can order Employee Sales by last name if you create a Custom Report under the Sales Tab. Once you're on this tab you'll see Create New Report in the top right corner of your screen. After selecting this you'll be on the Report Builder page. From here choose Add Report > Employee Sales. You should see all of your employees in the far left column. Click on the grey cell that says Name. Clicking on this will order employees alphabetically. 

If you have any questions please feel free to reach out to me. 🙂