When you enable project sharing, Autodesk® Revit® creates new worksets and moves elements and settings in your project into the new worksets:
All existing levels, grids, and reference planes move to the Shared Levels and Grids workset.
Each view moves into its own View workset. For example, Floor Plan Level 1 view moves into a workset called View: "Floor Plan Level 1". The view workset contains the view's properties and any view-specific elements, such as dimensions or text notes. When you add view-specific elements to a view, they are automatically added to the view workset. You cannot move view-specific elements once they are in a view workset. You cannot make view worksets active, but you can set their editability. See Making Worksets Editable.
Loaded families in the project move into their own worksets.
All project-wide settings defined by using commands from the Settings menu move to Project Standards worksets.
Any other existing elements in your project initially move to Workset 1. After you create new worksets, you can move elements out of Workset 1 by accessing their properties and setting the Workset instance property to the desired workset. You can also select multiple elements at once, access properties and set the Workset property to the desired workset