You have a Word document, which is in the normal portrait layout, and lets say you want one page in the middle of the document to be in landscape – maybe for a table, or a chart.
This is easier to do on an existing document with several pages of text.
Choose a page of the document to change to landscape, and go to the end of the page before – so if page 3 is going to be landscape, go to the end of page 2. Click on Page Layout, and then Breaks, then choose Next Page under Section Breaks. You should see a Section Break appear in the document.
Now, do it again – click on Page Layout, and then Breaks, then Next Page under Section Breaks.
Now you have two Section Break delimiters. Type (or paste) some text between them.
Click on the text you inserted, between the Section Break delimiters, go to Page Layout, click on Orientation, and choose Landscape, You should end up with one landscape page, The trick is, the landscape page must be bracketed by Section Breaks – it won’t work with Page Breaks.