what is your application server? This will depends on the app server you are running. For Websphere, IBM already comes with needed MQ client classes. For others, you would normally install IBM MQ adaptors specific to that specific app server.
Pega is running on WebLogic Server 126.96.36.199.0 and we have MQ server instances hosted in docker elsewhere. So we can connect to it using standard means (url:port / channel). For JMS it seems I need to define JNDI details (that i'm not familiar with). I have all the MQ provided jars in the classpath already (as we already have MQ connectivity established for queues, but this time I need to publish to topic)
Almost all the configuration of Weblogic/MQ integration is on the Weblogic side. Pega only cares about the jndi names for the most part. Check with your Weblogic admin to access the document like this from Oracle: