Worksharing - Autodesk Revit Architecture 2015 Essentials - page 233

Synchronize Now This option is probably used more frequently than the other
options. Consider creating a keyboard shortcut so you don't have to return to
the Collaborate tab as you work when you want to save to the central file.
Synchronize Now saves your local copy and syncs with the Central Model as well
as updates your file with any changes from the Central Model. Any borrowed
elements are also relinquished by default. But if you have an entire workset
checked out, it's not checked back in. It will still be editable by you after the save
completes.
reload Latest The Reload Latest option lets you reload the latest version of the
Central Model in your local project. However, it doesn't publish any of your work
in the Central Model.
relinquish all Mine Relinquish All Mine allows you to check in elements that
you may have borrowed but did not change. If you've made changes, you have to
either sync them with the Central Model or discard the changes without saving.
You cannot relinquish elements in a file that has been modified.
If you select this option, Revit Architecture will ask you what to do with the
elements you've borrowed or worksets you have enabled (Figure 10.13). If you
relinquish the elements and worksets, other people will be able to modify them
in their local files. If you keep ownership, the changes you've made will be lost,
but you'll still have the elements and worksets enabled.
Figure 10.13 Relinquishing elements and
worksets
When you have no elements or worksets enabled in a project, you can confirm
this by opening the Worksets dialog box, shown in Figure 10.14.