MSK : how to add a plugin to Kafka cluster?

I am creating an MSK cluster on AWS console. and I want to use the OPA plugin for Kafka.

The OPA plugin is a ZIP file that I have to place in libs directory of the Kafka installation. But how can I upload this ZIP file on my MSK cluster? Is there maybe a way to connect to my brokers? Or should I add a property in a custom MSK configuration?

Thanks for help 🙂