GarbleCloud's interface is designed to mimic, as closely as possible, the Google Drive interface. Similar to Google Drive you can share existing files directly through the GarbleCloud application interface. The process is identical to how you would do it within your Google Drive account.
How to Share a File
Select the file you wish to share then right-click to open the drop-down menu. Select the SHARE option.
In the dialogue box that pops up, enter the emails of each recipient you intend to share the file with. You may add a description of the file you are sharing with them in the attached box. Click the DONE button to share your file.