rospy subscriber queue

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Hello, I'm writing an ekf by myself as a project in a lecture and I thing I have a problem with the queue of the callback function to update the odometry. The thing is that I subscribe the topic odom as:

 rospy.Subscriber("odom", Odometry, odometryUpdate)

but it does not has queue. I've checked this tutorial to see if there is any option of adding a queue in rospy, but I can not find it. Is it possible to add a queue? If so, how can it be done?

if it is not possible to add a queue I would like to give more than just one parameter to the function odometryUpadte (the call back function). How can I do this?

Thanks!