To publish on more than one queue at the same time:
Note: If you have not created any queues yet, you can do so by following the guide here.
1. Create a queue post either in the Library > Queues section or by opening the publishing composer
2. If you are using the publishing composer, click "Queues" on the left side panel
3. Check or uncheck your queues or queue groups in the queue panel
Note: You cannot select two Queues if they contain the same profile
