What is an exclusive campaign?
Customer exclusive campaign - This option makes the campaign available to specific customers, simply add their email addresses. Customers must be logged in to use the discounted products.

Group exclusive campaign - If you have created one or multiple customer groups under the Customers (CRM) section, you can effortlessly direct your group exclusive campaign towards these groups. In order for customers to participate in the campaign, they must be logged in to their accounts.

To find out how you can create customer groups click here To find out how to add customers to a customer group click here
What happens if a customer uses a promotion code on products which are already on sale?
Providing discounts on products that are already on sale can have a negative impact on your profit margins. It is essential to have the correct settings from the beginning to avoid any potential issues.
What is the difference between Discount price and Product price campaign?
Discount price and Product price campaign have a distinct difference. Discount price immediately puts the product on sale