Use the Selection Tool (black arrow) to drag one or more of the 8 control handles around the perimeter of the frame.
Thank you for the help! The problem was that the image frame was "glued" to the image so when we enlarged the blue image box the image sizes also. We discovered the "Auto-Fit" box across the top
Control panel in InDesign CC just needed to be unchecked (once I made the image box active by clicking it.
Thanks for your help!
Peggy Horvath, LEED-AP, Assoc IIDA
Chartreuse Design, Ltd.