Worksharing - Autodesk Revit Architecture 2015 Essentials - page 234

Figure 10.14 Relinquished elements and worksets
In the following exercise you will work with closing and opening worksets in
an existing model to globally update visibility.
exercise 10.4: Open and Close Worksets
To begin, make sure you've downloaded the file c10-ex-10.4start.rvt , but
don't open it just yet.
Open or Close Worksets
In addition to the workset per-view visibility settings, worksets can be opened
or closed for the entire project. Doing so will globally turn on or off the visibility
of everything on that workset, for all project views regardless of the Workset
Visibility setting for that view. This is a great method to improve performance
or turn off the display for entire portions of the model.
1. From the Revit Application menu browse to c10-ex-10.4start.rvt
and select the file. Check Detach From Central and click Open. This
will allow you to open an existing Central Model to resave it in a new
location.