Hey @plund 
You can do this by sending a parameter to the next page. For example, if you’re taking the user from the index page to the popup on the profile page, in the go to page action you can choose to also send a parameter such as “popup” = yes:
*You can set the key and value to be anything you prefer, this is just what will be shown in the URL once the User goes to the next page.
On the profile page, you can create a “Do When Condition is True” workflow which detects the popup = yes parameter by using “Get Data from Page URL”:
Enter “popup” as the parameter name:
Type “yes” after “is” as the value:
Then set the action to show the popup:
This should work, but feel free to let me know if you have any questions!