Details I created a section "PopUpSection" with 2 table layouts where  Operations Tab :     Row editing = Master-Detail    Display of Details = Expandable rows

Presentation Tab :    Header Type = Collapsible

Referred this PopUpSection inside a harness "PopUpHarn" Created a main section with a button and onclick action called the Harness "PopUpHarn" This is displaying a cancel and collapse icons , which are not needed. On click of cancel button, complete popup window is closing and on click of collapse button, both the layouts are getting collapsed. Unable to get rid of them. Attaching screenshot Can someone help me out here.

Note: The same section "PopUpSection" referred in a flowaction and referred as a local action - target as modal window , then the cancel and collapse buttons are not showing up But my requirement is to show a popup window.