Sketch up model and Dimensions in LAYOUT default tray are greyed out

i have sent my floor plan over from sketchup to LAYOUT and have highlighted the viewport but the sketch up model and Dimensions in the default tray are greyed out - can you assist me in showing how to activate them again please thankyou

Share the file so we can see what you are working with.

Hi Dave, thankyou for reaching out - in the interim i found what i was doing wrong and now have access thanks again