In the Security tab, settings for the security of the time and attendance system are done.
This option allows to send a new password via email, if a user has forgotten his password. The sent password should be changed immediately after the login for security reasons.
Here you can restrict the access to your online time tracking system to specific computers or networks. This means that your time and attendance system then is only accessible by the given computer or from the given network. Valid input values for this restriction are a domain, a single IP address or a subnet. For example mydomain.com or 220.127.116.11 or 185.110.*.* . Several IPs or domains can be specified separated by a space. The administrator and application managers are not affected by the restrictions in order to avoid a complete "lock out". If you are not familiar with IP addresses and subnets the next point will likely be helpful.
Please click on the link on this computer (3) to fill the field for the IP address restriction with the IP address of the computer you are using currently. A click on the link this network (4) fills the field for the IP address restriction with "the network" the computer is included. So both links just provide assistance with filling in the IP address field.