The purpose of the section "Geo Location Filter" is to specify when to allow or deny logon based on the geographic location of the user.
This setting determines if user authentication is required when logon attempts are made from the specified IP address;
- required
If this option is selected, then the user will be asked to provide multi-factor authentication prior to logging on. - not required
f this option is selected, then the user will not be asked to provide multi-factor authentication prior to logging on..
After clicking on the 
icon the following window will open;
Location details are then supplied that identify the which geographic locations the policy will apply to during logon. (based up IP addresses).