im currently working on rearranging a project from my supervisor, containing various books and sheets. I am expected to give them a uniform layout in order to make it easier to find and access specific data. One task is to change the value of specific columns in most of the sheets (those columns all have the same name and should have a maximum value less than 1). I need to multiply them all by a certain value.
My question: can i access them all at once or do i have to access them one by one?