Scalable way to report on MQLs by Converting Campaign across multiple event programs?

Hi all,

I’m trying to create a Marketo report showing where MQLs generated and handed over from our FY26 events sit in the funnel today.

The requirement is for each regional marketer to select the event programs from their region and report on the current lifecycle status of the MQLs generated by those events.

Program Membership would make selecting multiple events straightforward, but we specifically want to focus on leads whose MQL conversion was attributed to the event—not everyone who was a member of the program.

I’ve therefore used Converting Campaign as the filter. However, Marketo doesn’t appear to support selecting multiple values within a single Converting Campaign filter, so I’ve had to add each event campaign individually. There are already 29 for EMEA, and this won’t scale well once we include NAM and other regions.

Has anyone found a cleaner way to:

• Group or dynamically filter multiple Converting Campaigns
• Allow regional marketers to select their relevant event campaigns
• Report on the current lifecycle stage of the MQLs attributed to those events
• Avoid manually maintaining a separate Converting Campaign filter for every event

Would this require a custom field or classification populated at the point of MQL conversion, or is there a more scalable native Marketo approach I’m missing?

Thanks!