To 'Manage Allowed IP' you have the following procedure:

After you login go to Control Panel > Company Setting there you will find 'Activate Restricted IP' section to activate/deactivate this setting.

Activate/Deactivate Restricted IP setting by checking 'Activate Restricted IP' setting and then click the Add/Update Settings button .

You can manage number of Allowed IP Address by clicking 'Manage Allowed IP' tab near 'Manage Roles' tab.

Super Admin can login from any IP Adress and Employee(s) can login only from allowed IP Address(es) when Restricted IP Setting is enabled .