Hi Zoe,
We cannot currently edit what data or filtering displays on the event overview page. I definitely recommend posting this idea in the Ideas tab so others can vote on this customization! However, any reports that you customize and find yourself running often can be saved as a template in the event. These templates are then easily accessible in Reports > Saved Reports.
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Madeline Stalnaker [Designation]
Lead Client Success Advisor
Cvent
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