I went through this: https://rolandd.com/support/ro-csvi/import-data-into-a-joomla-4-custom-fields-subform/likes
So for example:
Field: Program --> Main Subform
Fields:
- Date --> calendar field
- Sessions --> Subform Field
Field Sessions --> Subform with fields: Start Time, End Time, Session Title, Session Abstract, location, address map
I see this suggestion, but how would I do it with multiple subforms?
"alias";"catid";"subform"
"first-article";"2";"Date#2022-05-17|Venue#test1|Comment#My first description~Date#2022-05-18|Venue#test2|Comment#My second description"