A funnel visual has the following shelves:
Add a time-based field from the Data menu, such as an event timestamp.
This shelf accepts a single field.
Add a unique identifier field from the Data menu, such as user ID.
This shelf accepts a multiple fields.
Add a pattern of previously-defined events from the Data menu.
This shelf accepts multiple fields; a minimum of two fields must be present to display a flow visual.
Add a Measure field from the Data menu to specify the aggreate that connects the events.
This shelf accepts a single field.
Add Dimension or Measure fields from the Data menu to include or exclude categorical or value criteria.
This shelf accepts multiple fields.
This shelf limits the number of flows in the table.
The default value is 20.