Add a group to a topic permission

[hekme5]

Greetings,

I have a Kafka cluster and am using KSM to manage permissions. I giving a permission to user to access a topic.
They are getting a 'Group authorization exception' when they try to consume from the topic. How can I add a group to permission?
In other words, I would like to use this command using KSM: ./kafka-acls --bootstrap-server --add --allow-principal User:<cert_name> --topic <topic_name> --consumer --group=*

Thank you