Navigate to **Customers >> Customer List**
Select the customer profile you need to adjust the payment method for
Select the **Payments Tab**
**Payment Methods >> Edit**
Now you'll be able to select when that payment method can be used and for what kind of purchase.
Click **Save** to apply these changes.
In the case below the customer will be able to select cash as an option when purchasing a drop-in (session/event) and buying products from the store.