What features do I get access to when configuring the SMS gateway?

You need an account at Cellsynt to use this functionality which can be setup by visiting their website: https://www.cellsynt.com/en/ 

This are the following services you can get: -

• Two factor authentication - SMS code when logging in (both Security Center and Organizer).

• Scheduled protected reports - To be able to unlock the encrypted PDF file.  
• Shared protected reports created manually - To be able to unlock the encrypted PDF file.  
• SMS notification alert for Continuous Monitoring.