To enable customers to check out with COD (Collect on Delivery or Cash on Delivery):

• Log in to your CoreCommerce admin area.
• Click in the upper right corner and click on Payment Settings.
• Make sure COD is selected under the Other Payment Options section
• You will see three checkboxes next to COD (Collect on Delivery): Web, Mobile, and Phone. If you want your customers to be able to choose COD on your website, check "Web;" for mobile devices, check "Mobile;" and for phone orders (placed within the admin), check "Phone."
• If you want to set a fee for COD, click on the COD line to expand that section, then input the COD fee amount.
• When done, click Save.