@TheBatWinfrey, If the other USAA account you want to transfer to is not one of your own accounts, you can call in to 210-531-8722 and have their account number and name handy of recipient. A bank rep can transfer those funds for you.
If it is into your own account please click on either Transfer or Deposit, depending on how you would like to deposit the money. (transfer or check)
Hope this helps ~Tom