The new Process model overlay app in ARIS Process Mining offers users the ability to overlay the transferred reference model with case or activity level measures. The aggregation level can be *edited* (i.e. changed from Count to Sum), but there currently appears to be no ability to **configure** the measure in the same way that is possible within a component in App Builder - specifically, it is not possible to represent the measures in the Process model overlay app as a percentage share value. This is a very useful lens for contribution analysis.
Thanks for filing this idea. we will take this into future consideration.