You can select the latest time that orders can be processed to be ready for collection that same day.
To do this you will need to go to your DPD settings page by clicking on your account email in the header and selecting DPD in the drop down menu.
Once the page has loaded you will need to scroll to the bottom of the page and click on the silver cog, this will reveal the advanced settings where you will be able select a cutoff time for processing your orders.
If you have any problems or questions you can get in touch with us at Shiptheory support.