1. Launch Adobe Acrobat and open your PDF file that you need to insert a page into.

2. Click on the Pages tab > Options > Insert Pages:

If you have a later version of Adobe Acrobat, this option will be under the Tools menu:

3. Browse your computer to find the page or pages that you wish to insert into your open PDF.

4. Specify where the page or pages need to be inserted into your PDF and click OK:

5. Save your file as a PDF, or an optimised PDF for a lower file size.