How to make a subtable in another subtable

Could you please tell me how to do to create a subtable in another subtable.
Here what I need to do:

City 1 (subtable 1)
Airport 1 (subtable of the subtable 1)
Airport 2
City 2
Airport Y
Airport Z

Thank you for your help


At the moment, we haven’t supported multiple subtables layer within one page. To achieve structure like this, you’ll need to have at least two different sheets.

Step 1. Create the “Country” sheet with a subtables to record “City”

Step 2. Use “new sheet from subtable” to create a new sheet based on the “City” subtable.

Step 3. In the new sheet “City”, create another subtable to record the “Airport”