Yes, it is possible.
Run the command with ? parameter to know command line syntax:
BestCrypt installation program supports silent installation. To run the BestCrypt installation program in Silent mode, use the '-S' command-line parameter:
The installation program in the silent mode is not hidden, the user sees the process. Use '-H' key to make it completely hidden.
If you copy the text of the license, you received from our company, to "UserLicense.txt" file and put the file to the same directory where bcryptSetup.exe installation program resides, you will get the software automatically registered.