Specify a Certificate Chain to Use to Authenticate HTTPS and API Services You have a created custom certificate chain. For more information on creating a certificate chain, see Create a Custom Certificate Chain. Specify which certificate chain to use to access the web. The argument indicates which of the three certificates to specify. cert --use {array | group | custom} [--https] [--apis] (Optional) Enter the following command to verify that the correct certificate chain was specified. cert --list