Hi
Welcome to UiPath
Let’s go one by one
By default there are no kill process included in RE framework
It just has kill process xaml where we can add one single kill process activity within a loop to kill all back running processes or applications
And
It is invoked 3 times across the framework
Though the workflow is invoked three times its again the same one single xaml being called repeated
So on the whole it’s created one time and used in three places
And for this
To be exact only one time should be fine
And it depends on the process
That is if your process involves opening and closing multiple application then have those process names in a array and pass it to for each activity and inside the for each use one single kill process activity and pass the input as item.ToString in ProcessName property of kill process activity
For example
Cheers