I apologize, but there seems to be a misunderstanding in your question. The sentence you provided is not entirely accurate based on the information in the knowledge sources. Let me clarify the correct information about custom events in Mixpanel's Flows report:
According to the Flows documentation, Mixpanel automatically considers the most used and common custom events in your project for display in the Flows report, not the activity feed. The criteria for showing custom events in Flows are:
1. Only custom events shared with all users in the project are considered.
2. Only the 50 most frequently queried custom events in the project are used in flows analysis.
3. For overlapping custom event definitions, the more frequently queried custom event is shown.
To directly answer your question: It is based on usage in reports (queries), not custom event occurrence. The documentation specifically mentions "most frequently queried custom events," which refers to how often these custom events are used in reports and analyses, not how often they occur in the raw data.
This approach ensures that the most relevant and commonly used custom events are displayed in the Flows report, making it easier for users to analyze common paths and behaviors.
