Actually ABan only offers the functions required to make a ban system So, you need to make your own command with these functions.
BanIP(IP[], Admin[], Player[], Reason[])
Unbanip(IP[])
BanCheckIP(player)
Unbanname(name[])
BanName(IP[], Admin[], Player[], Reason[])
BanCheckName(player)
GetSubnet(IP[])
Subnetunban(IP[])
SubnetbanCheck(player)
Subnetban(IP[], Admin[], Player[], Reason[])
If you don't know how to do it then try editing ban command from one of the released script.