@Chris ******
this is the (a bit old) 'general' requirements for an extension of STV. You need to contact your local immigration office for a handout of their requirements.
And which pages of your passport you have to make copies of depends on your local immigration offices. Some require only the latest stamps. Some require all stamped pages. Some do all pages including blank pages. YOU are the one who needs to make copies of the necessary documents and sign them all.