If you want to set reminders for specific departments go to

Frontpage - Treatments - List and Treatments

Go to Treatments - Treat descriptions - Edit

Search for the treatment where the reminder should be attached.

When treatment is found, go to the tab Reminders.
Delete the "-" in the Text box and press tabulator

Search for the reminder text you want to use and double click on it.

Do the same in the Department box and find the correct department. When done press Add.
If you want to add another specific reminder on this treatment, go back to the text field and do the same again and press Add.

When you are done press Update.