Ring to Floor/paging system after hours

Hi all,

I am new to ring central and have been tasked with setting up our system to ring to paging system after hours. However when following the instructions on the guides I have found I am either missing some of the settings in admin portal or the setup they show is quite different. 

I have already setup business hours but could use some guidance on setting up the rest. The setup is not very intuitive and nothing like when I administered a Mitel system.

Thanks in advance

Pete