How to show an Icegram Engage message depending on the scroll position of the visitor
Step 1: Install and Activate Icegram Engage Pro.
Step 2: Create New Campaign or Edit a previous campaign.
Step 3: Go to the Show Trigger option in the Behavior window.
Step 4: Set Show Trigger of that message as "Scroll Position".
Step 5: Further configuration of the Scroll Trigger can be done according to your requirements.
To show any Icegram message when a visitor scrolls half of the page
To show any Icegram message when a visitor scrolls to the end of the page
Step 6: Fill in other details of the campaign and check the preview.
Step 7: Publish / Update the campaign.
Read more about Icegram's Page Level Targeting / User Level Targeting feature.