The provider can be added by the Organization Administrator from the Dashboard and by and end user, as a Private Provider, from the Dashboard (if enabled).
Please note that for the Box Storage Provider to be available for Enterprise deployments it must exist in the package as defined by the Appliance Administrator.
In the first step of the wizard name the root level directory for Box files. This is the name that will appear in the Global File System.
When you press the authorisation button you will see a redirection screen similar to below which is explicit about the website you are being re-directed to for authorization.
The next step is to use your Box account to authorise access from Access Anywhere.
** note that if you are using a Box teams account you may need to pre-authorize Access Anywhere prior to connecting otherwise the connection will fail. Details on how to do this can be found here.