To grant individual authorization for WBS elements and networks, you have to activate access control lists (ACL) for the project profile and the network profile. Access control lists are a feature that allows you to control access to project objects, such as WBS elements and networks, based on user-specific authorization objects. You can use access control lists to define which users can create, change, display, or delete project objects. The project profile is a parameter that defines the basic properties of a project, such as its project type, number range, and budget profile. The network profile is a parameter that defines the basic properties of a network, such as its order type, number range, and scheduling parameters. You have to activate access control lists for both the project profile and the network profile in Customizing in order to use them for WBS elements and networks. Reference:https://help.sap.com/doc/0f069b2e08b748f1b480d4c8b46c3c49/100/en-US/6a7a9f0a6e421014e10000000a174cb4.html