Urgent question about the app

I will apply a discount to all products in my Shopify store, but I want to close it (at the point of sale), but when the customer goes to the cash register, the discount will not appear on the product, is there such an option? I only want to make a discount in the online store, if you answer quickly, it would be very good if you answer quickly, I will start the discount at 12 at night, before starting the discount, I create a collection and add the products that are not discounted there, I select the collection from konigle and create the discount, is it enough to close the point of sale from the collection?

This is my problem, I wonder if anyone who uses the konigle application has information about this subject, I want to separate the discount in the online store from the pos and close it.