Installing certificates on arch

at school the wifi network is wpa2 with peap and mschapv2 requireing a certificate to authenticate and connect along with user name and password i have obtained a copy of the certificate from the school's it technitians in ubuntu to add the certificate i copied it into /usr/share/ca-certificates/extra and then ran sudo dpkg-reconfigure ca-certificates which gided me through the screens below and gave the output however i would now like to move from ubuntu to arch linux but have been un able to add the certificate and connect to the network could anyone please tell me what the equivilent command is in arch.