Log in to your ActiveCampaign account.
In the lower-right corner, click on "Settings"
In the left panel, select "Developer"
Leave this window opened and log in to your WisePops account.
Open your campaign and click on your sign-up form.
In the left panel, click on the ActiveCampaign icon:
In the pop-up window, enter your ActiveCampaign details and click submit
In the left panel, select your destination list.