System Settings : General settings : Certificates : Importing certificates
 
Importing certificates
To import a local certificate:
1. Go to System Settings > General > Certificates > Local Certificates.
2. Select the Import button.
3. Enter the location of the local certificate, or select browse and browse to the location of the certificate, and select Ok.
To import a CA certificate:
1. Go to System Settings > General > Certificates > CA Certificates.
2. Select the Import button.
3. Enter the location of the local certificate, or select browse and browse to the location of the certificate, and select Ok.