I just logged into it and yes there is an option in there to configure upvoting comments, but you have to use Hivesigner (not hive keychain) to log into the hive.vote website. This is basically the steemauto account that did the same thing on the steem blockchain. This is something you have to configure on your own because what you are doing is giving permission to the steemauto account to upvote accounts that you configure to auto upvote on the hive.vote website, good luck!