I want to extend the project structure

In order to be able to extend a project structure you will need the read permission for this element. This means that you need the role “Manager” or "Read/Write" by the quick administration.

If you do not have these rights, you can make a request for rights.

If you do have the rights already, select the respective project structure (via “View – structure node”) and activate the edit mode. Then you can extend the struktur via the function “New”.