Shopify has an inbuilt Click & Collect (Local Pickup in Shopify’s terminology) function which can be set up from within the Shipping settings.
Now-a-days businesses need to have multi-channel touch points to ensure they meet customers where and how they wish to interact and buy. Brick-and-mortar businesses must be in a position to offer face-to-face interactions as well as online and, if appropriate, snail mail catalogue ordering as well.
Click and collect is a variation to normal eCommerce transactions in that there is no shipping involved but customers arrange to collect products themselves saving on any delivery costs and potential delays.
Shopify covers this off helping businesses go online rapidly, offer shipped or collected products, and can even integrate its point of sale system.