I want to be able to set default campaign per "regarding" type on CallSave screen so that when I choose "Regarding" corresponding default AdHoc Campaign gets selected.

Currently there is a setting that controls this when client is not using AdHoc. When using AdHoc it currently always selects Premium if it is present for both - New Sales Opportunity and New Premium Sales Opportunity. We need to be able to control which default campaign gets selected based on Regarding Type.