Can I setup numbers, that its standard format to write documents (and limit its format while working) to the .xls format?
I work within a company group, where only Windows computers are used and Excel sheets is the standard.
It bugs me, to always click buttons and choose preferences, when I just want to save a file (Apple+s or Apple+shift+s).

I work within a company group, where only Windows computers are used and Excel sheets is the standard.
It bugs me, to always click buttons and choose preferences, when I just want to save a file (Apple+s or Apple+shift+s).