Enabling the app in the theme is a simple process. You can enable the app directly from the theme customization.

Embed in Themes (Any Theme)

From the Online Store, go to the customize section of the Theme.

A side menu drawer will appear on the left corner. Within the customize option, go to App embeds from the side menu.  Enable the embed for Product Personalizer and click on save.

You may set up a product from your store and review the product page to ensure that the customization fields are displaying correctly.

 

Theme Editor (Shopify 2.0)

If the placement is wrong, or you want to change the position of our app field, then you can follow the instruction below. This is only available for the theme that supports Shopify 2.0.

First, from the customization window, select Products, and then select the correct product template you want to edit. You will find only the default template from the theme if you do not have multiple templates. Select the default template in that case. From the product template, change the product preview to the product configured with our app. Next, inside the Product Information section, add our app block. Later you can place this block into the correct position and click the save button.