1.) Sign in to PhoenixCONNECT
2.) Navigate to your organization’s page by scrolling down on the homepage or utilizing the left-hand side tools and click on the organization you wish to make updates to.
To access the Action Center, select the switchboard in the upper right corner of the home page and select 'Manage.' 
3.) Expand the drawer on the left side of the screen and select 'Gallery'
4.) Select a photo album and choose 'Add Photos'
5.) The photo album should be set to be visible to 'The Public'
Please note that in order to update an organization's cover photo, you must be the Primary Contact and/or have officer rights.