If for any reason you need to work offline, that is without having connectivity to Helix Server or without checking out files, you can manually enable write permission for the files and continue editing, adding, and deleting files as required.
To bring the Helix Server depot up to date with the work you did offline:
If there are files that need to be reconciled, the Reconcile Offline Work dialog appears.
compares your workspace to the depot and lists the following in the dialog:
Depot files that are missing from your local workspace. Select the files that you want to mark for delete.
For renamed files, you must integrate the original file to the new filename and delete the original file. If you have altered the directory structure of your workspace, you might need to adjust your workspace view.