Select the "Text Area" Option and place on your stage.
From the Text Area properties click on the List Values: "Spanner Tool Icon" this will open a new property "Content" window.
Within the "Content Window" select "Scene" from the dropdown list. Select your Scene you want the Text or Image assigned to. Type your content into the right window pane OR use the Browse for folder/document icon to find the Text content or image file you want associated to the selected scene.
Repeat this final step to assign text or image to the next Scene (like pano 2 etc).
All very simple stuff.
You can even add the text area to a "pop-up window and trigger the window with a button.