These examples are based on a Linux system. Switch to the mqm user.

su - mqm

The setmqaut comamnd can be used to grant or remove permissions. 

The dspmqaut command is used to display a users current permissions. The dspmq command can be used to display the managers. This assumes that the "mqm" users .bash_profile has been updated to have PATH=$PATH:<root installation directory>/bin.

dspmqaut -m MANAGER01 -t qmgr -p JohnDoe

Entity JohnDoe has the following authorizations for object MANAGER01: 
    connect
    inq

The -n option is used to display the authorizations that JohnDoe has on a queue.

dspmqaut -m MANAGER01 -n QUEUE01 -t queue -p JohnDoe

Entity JohnDoe has the following authorizations for object QUEUE01: 
    get
    browse
    put
    inq

Or on a topic.

dspmqaut -m MANAGER01 -n TOPIC01 -t topic -p JohnDoe

Entity JohnDoe has the following authorizations for object TOPIC01: 
    pub
    sub

If a user is unable to GET or PUT messages on a queue, check the queue's error.log for the following exception.

AMQ8077W: Entity 'JohnDoe' has insufficient authority to access object 'QUEUE01'