No, StopMotionCreator Agency is an Upgrade for StopMotionCreator Standard i.e. StopMotionCreator Personal or StopMotionCreator Commercial License.
Once you Upgrade to StopMotionCreator Agency you can use the StopMotionCreator Licenses for your StopMotionCreator Software as long as your StopMotionCreator Personal or StopMotionCreator Commercial License is active. You will not need to pay any additional fee for the Agency Licenses.