Install a set of apps based on department

I'm defining a department variable using a choice input. How do I assign a set of apps to install based on this variable?


<ChoiceInput Variable="Department" AlternateVariable="True" Sort="False" Question="Please choose a department for this system" Required="True" AutoComplete="False">

<Choice Option="Surgery" AlternateValue="A" />

<Choice Option="Outpatient" AlternateValue="B" />

<Choice Option="Physical Therapy" AlternateValue="C" />

</ChoiceInput>

</Action>