Open up Adobe Acrobat on your computer:

At the top of the main screen, at the top of the "Recommended tools for you" section, find and select the on the blue "See all tools" text.

Once in the tools menu, under "Create", you will see “Combine Files”. Select the Open button underneath.

You will then see the below screen. This is the place where you add all the documents that you want to combine, it can be in any Microsoft format or multiple PDF’s/etc. (example: Personnel Action, Performance Evaluation and Training Form can be combined into one document).

Once you have selected all of the files you need to combine, you can just drag them and place them in the correct order. Your screen should look like this:

Click on the combine button, and any document that was not originally a PDF will be converted automatically. Once the files are finished combining, you will notice that the document is called a Binder. Just click File > Save As and change the name of the document.

This document will now be ready to be digitally signed.