When opening a document made by someone else, I would like the margins to automatically be set to 0.4 cm, the page orientation to landscape and page size to A3.

My dad gets emailed a spreadsheet weekly and he prints them off. To fit them onto one page he applies these settings, which is quite laborious. I thought that there must be a quicker way of doing this!

I tried creating a new default template with these settings but this only works for a new blank document. I tried to create a style to quickly apply these settings but I realised these styles are document / template specific (?) and so don't appear when opening someone else's document.

Anyone have any ideas how I can do this? Thanks =]