On the input side (left side) of the Map
Editor, each of the two tables represents one of the input
flow, the upper one for the main flow and the lower one for the lookup
On the output side (right side), the two tables represent the output flows that you named as out1 and reject earlier.From the main flow table, drop its three columns onto each of the output flow table.
From the lookup flow, drop the event
column onto each of the output flow table.
Then from the Schema editor view, you can see the schemas of the both sides have been completed and as well, click each table to display its schema in this view.