Authorizations 
The Authorizations tab page on Document on Web UI has the following screen areas:
Authorizations for Current User: Allowed activities are selected in the Allowed Activities table.
Detailed Authorizations: You can perform an authorization simulation for another SAP user. The simulation provides you with an overview of the allowed activities for the specified user.
Access Control List (ACL): You can define additional authorizations for a specific user for the current document.
Note that the ACL is defined in addition to the Access Control Context. The authorizations provided by the ACL override the authorizations in the Access Control Context.
Activities
Simulating Authorizations
On the Authorizations tab page, select Detailed Authorizations.
Enter the name of the user.
Choose Apply.
The system shows a list of allowed activities for the user. Since there are several sources for the authorizations (Access Control Context and Access Control List), the system sets the Relevance checkbox to indicate which authorization is the final authorization.
Defining Authorizations with Access Control Lists
On the Authorizations tab page, select Access Control List (ACL).
Choose Assign User.
Specify the user and the allowed activities.
Choose Save.