Shopify Gift On Order will enable you to assign free Gifts with order, as per the rules defined.
Lets understand it in detail.
Admin can create various gift products.
Admin can create the rules for the Gifts to be given with the Order.
The gift product will be automatically added in cart of the buyer.
The buyer can also change from the range of free gift available.
In the configuration section of the app you will just have to set the email ID and the domain name then click on save and you are done .
Creating Gift Products
To display the Gift on frontend, the first step is to select the product you want to add as a gift – by visiting the product section of Shopify and choosing the Gift on Order from app section. This way the image gets displayed in the app as a Gift. You can then create the rules to assign the gifts.
Add New Gift Rule
Clicking on the Add button you will be redirected to the section where you can create rules, set up the minimum order value to become eligible for the free gift, choose products for gifts rule & make a default gift, enable/disable the rule.
Also you can also set the period within which the rule and gift will be applicable.
On front end, when a buyer will add the products to cart and as per your rule, the minimum order value has been crossed then the default gift item will get automatically assigned to the cart.
The customer can however change the free gift if you have given the options of other gifts as well.