An implantable medical device may be programmed by a programmer to apply a variety of ventricular fibrillation (VF) and ventricular tachycardia (VT) therapies, such as antitachycardia pacing (ATP) and cardioversion shocks. In general, the invention is directed to automatic activation of VF- and VT-related functions upon a single command. When a clinician interacts with the programmer to set VF therapies to active status, for example, VT therapies are automatically set to active status as well. Activation of several VF- and VT-related functions with a single command may save considerable time and may be beneficial to the patient. The invention further provides the freedom to customize the functions to the particular needs of a single patient or a group of patients.