Inside Popup Shortcode gives an opportunity to add a clickable element into your Popup to open another one.
To create an Inside Popup Shortcode:
1. Go to WordPress Dashboard >> Popup Builder, and choose your desired Popup (editor possibility is a must)
2. Now, please click on Insert Popup
3. Type the clickable text between two codes
*477 - Second Popup ID number
And the result
After clicking on the SHOP NOW text the second Popup will appear.