Within SystmOne, surgeries can add individual messages to drug groups for patients to receive on their prescriptions.
To do this, go to Setup->Prescribing->Action group descriptions:
This will show you the following screen. You can either scroll to the drug group you want, or search for it using the filter:
In this case we have selected "Short acting beta agonists (relievers), and by double clicking this we can add a consistent message to the prescriptions of all patients receiving this medication:
Click ok, and all done!