...
Enable Dropzone This setting enables the drag and drop feature for uploading files.
In order to use Drag and Drop in Chrome, you must disable the Chrome site isolation setting. In the Chrome url bar, go to chrome://flags/#site-isolation-trial-opt-out and set the flag to disabled.
Enable Version Upload This configuration is used to activate versioning. After enabling versioning, S-Drive will allow you to upload different versions of files. You will be able to see and manage the versions of your files. Please note that once versioning is enabled, you can't disable.
...