It is possible to change Word's default settings if you are always deviating from the standard settings. Every Word document created contains at least one section. The majority of the documents you create will, no doubt, fall into this category. However, whenever you want to perform certain types of formatting, such as changing margins, headers and footers, page size, page orientation, page numbering, page borders, or the number of newspaper-style columns, you must add sections to the document. For more information regarding sections, click here .
Sections define where certain types of formatting changes begin to take effect.
Setting this up requires inserting a section break before and after the table for that page, then designating in page 4's section that you want to change the page orientation. Doing so assures that only that page will be affected by this formatting change. Think of them as defining the boundaries where formatting takes effect. So, if you wanted to change many paragraphs at the same time, you would need to select them first, then apply the formatting changes.