To add the product to the customify area is very simple, there are 3 ways for that :
Using import ShopifyGo to your product list Shopify then select the product which product you need to customize
After that click the "more action" button and import to customify and it will import the product to customify and you will see a message the product has been successfully added.
Using button import product shopify
this step is very simple just open your product on Shopify then check more action button and click and there is a dropdown button customify just click it, it will bring you to import the product on customify area
Using import customify button
For this, you will need to go to apps and select customify app, next select custom product menu and click create product button
after selecting this button will bring you to the new page it will ask you to add the product from your Shopify product or from our existing template
If you choose to import, there will be pop up box and you can search just type inside the search area and enter it, or you can scroll the box and click the title to add the product
after you enter the product it will bring you to customize the areaCustomify TemplateIf you click to choose from the template it will send you to the template area and you will need to select from the template which product you want to make, just click the select button
After you click create button it will redirect to product creation you will need to input the title, description and click create button then it's done.