How to Add an App to a SharePoint Site

Apps for SharePoint are small, easy-to-use, stand-alone applications that perform tasks or address specific business needs. You can add apps to your site to customize it with specific functionality or to display information or perform various document-based tasks. 

You may be able to add apps to your site from a variety of sources. For example, you can add a new document library or a SharePoint calendar list, you can add these by browsing the apps under classic experience. You may also be able to request or buy apps from third-party developers by browsing the SharePoint store.   Apps from the SharePoint store must be reviewed and approved by NUIT Information Security Office if the app has not been approved prior.  

To add an app or request a SharePoint app follow these steps:

1. From the home page of your SharePoint site click Settings gear in the upper right hand corner and select Add an app.
   
2. Click on classic experience to add the most common apps such as creating a new document library or list. 

or Click on Find more apps in SharePoint Store.  

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If you select an app in from the SharePoint store and it has not been approved before you can click on the Request button. 

3.   ​​​​​Once a new app is requested the Collaboration Services Team is notified and the request is forwarded to the NUIT Information Security Office team where they will approve or deny the app.  The requester will be notified if the app is approved or denied.  If the app is approved the requester will be able to install the app on their SharePoint site a this time. 

Microsoft article on adding an app to a SharePoint site ==> Add an app to a site - Microsoft Support