By default your Licenses will be deposited in your MASTER License Pool underneath the Top-Level customer.
License moves are done through the Manage Licenses menu option. Simply Drag/Drop the Company(ies) you'd like to manage onto the graph. Use CTRL+Drag to select licenses and move them to the pool of your choice. After dropping licenses on a pool, you'll be prompted for the number to move along with a comment describing why you're performing the license move. License moves aren't sent to the servers until all pending transactions have been applied.