#1. Hover on the product you want to add a Form, then click on the 3 dots (…).
#2. Next, click Edit.
#3. Next, you click on Additional Info.
#4. Next, hover on anywhere on the content box and click the plus icon (+)
#5. Next, choose Form.
#6. Next, you choose Design.
#7. Next, Turn on the Lightbox option.
#8. You can enter any text that you want. Then, you click Apply.
#9. Next, you click Save.