To offer your clients "In Studio" or "Pickup" shipping, you will need to be using Self-Fulfillment. Simply create the pickup option within your shipping panel, by going to Store > Shipping > Self-Fulfillment > and selecting "Add Rate". Here you can title the shipping option as fits your needs to create the free pickup option. You will need to type in the 0.00 balance to set and save the pickup option as a free of charge option.
Please note, you will need to physically type in the 0.00 balance, as you cannot save the 0.00 preview. Once you have typed in 0.00, the system will allow you to save and create the pickup option!