proceed to checkout
The Spanish phrase 'pasar por (la) caja' translates to 'proceed to checkout' in English. This is commonly used in retail settings, like supermarkets or clothing stores, where after selecting the desired items, you are instructed to 'pasar por la caja', which signals that it's time to go to the cashier or checkout counter to pay for your purchases.
I went to the supermarket and I had to go through the checkout before leaving.
In this sentence, 'pasar por la caja' means having to go to the checkout, in order to pay for your purchases, before one leaves the supermarket.
After selecting all your products, you should go through the checkout.
In this context, 'pasar por la caja' is used to illustrate the process that after selecting your items in a store, you must proceed to the checkout to pay.
Do not forget to go through the checkout to pay for your items before you leave the store.
Here, 'pasar por la caja' is used to remind someone to pay for their items at the checkout before leaving the store.