Calendar setting on my iphone 5s How do I set up my iphone 5s so that it shows all my calenders (home and office) but does not put my home calendar entries on my calendar at my office?
You can set a default calendar for new entries added on your iPhone.

To do so on your iPhone, go to Settings -> Mail, Contacts, Calendars -> Default Calendar (at the very bottom). There, choose your Home calendar and all new entries will be added to that calendar by default.