Codez un logiciel

I need to create a macro in a powerpoint file that update itself taking informations from several excel files. I don't want to create simple links in my case i really need a macro, not from an excel visual basic but from Powerpoint visual basic There are 4 files, an existent powerpoint file with already the first page that should not be changed. You need to use this file and writte codes inside it. Please create a button on a second slide where nothing else will be added ( except this button of the macro). There are 3 excel files with several that will be use to update the powerpoint. For the order, simply go like that " classeur1test - sheet one goes to slide 3 - sheet 2 goes to slide 4 " then " classeur2test - sheet one goes to slide 5 etc until the last sheet of the excel file classeur3test " Inside the excels file there are tables, pictures and graph Please use simple codes, those files are fake one, i want to copy the codes later on my own real file and adapt them So basically i want to update my powerpoint every time using the macro that use several excel files. I hope it was clear