I have imported 12 graphs into powerpoint based on the same excel spreadsheet, but when I import them they each have their own excel sheet 'behind'them. In order to update them on a monthly basis I have to either update each of the excel sheets in turn within powerpoint, or reimport each of the graphs from excel which is laborious. What I want to do is link each of the graphs to the same single spreadsheet in powerpoint to prevent the repetition. Any suggestions?