We use standard and custom reporting in Google Analytics. But for our reports we need to change the attribution model. In https://support.google.com/analytics/answer/1665189 we have found that Analytics uses Last Non-Direct Click model by default when attributing conversion value in non-Multi-Channel Funnels reports.
How would we switch to another default model? Multi-Channel Funnels and Model Comparison Tool are not suitable. We need custom report with First Interaction model.