It may be required that some of the documents available in Crescendo should never be shared. Perhaps these are for internal use only or they are confidential.
Crescendo allows you to disable sharing for selected files.

How to disable sharing of a document:
1. Locate the file in your cloud storage.
2. Append [Crescendo-confidential] to the file name.

3. Sync Crescendo to apply the changes.
Open the file and notice that the Share button is no longer visible.

Pro tips:
Crescendo for Google and Box users can use Folder Description instead of the Folder name.
Crescendo for Box users and also use a Box Tag.
*This feature is not available on Crescendo for Salesforce Classic