How to Add Web Parts in Sites
PLEASE NOTE: you MUST be an administrator of your site in order to add these web parts. If you are not, you will not have access to add web parts.
This document shows how to add a web part to your sharepoint site.
Before you begin, make sure you are on the correct level of the site that you would like your app installed on. If you want it on the top level of your site, make sure you are there by double checking the URL.
1. In the top right hand corner, click the small gear icon.
2. From the dropdown menu, select "Site Content."
3. Once you are in the site content screen, click the "Add an App" option. You should see this right away.
4. Either search for, or navigate through the app pages to find the app you are looking for. Once you click on the app, it will automatically add it to your page.
Final note: Not all apps are included on every site. If you don't see the one you are looking for, you may have to download it from Microsoft.