You can manually insert a page break or a section break in a Word document. You manually insert a page break when you would like the page to end after certain text. Working with section breaks can be trickier, but more useful than page breaks, allowing you to split your document into sections that can each be formatted differently. For example, you can use a section break to format part of your report/document into columns. Without sections, Word sees your report/document as one big section (you can’t do different headers or footers or page layouts).
For more information see the Microsoft support page. Insert this (goo.gl/40mmMN) into the “Tell me what you want to do” tab and search for “page breaks.”