As far as I know - it's not also possible to edit the Marketo Form field that each checkbox/answer goes to a separate field in Marketo database - all the selected information can go to one particular field, not several.
Depends on how you construct the form.
Individual Checkbox fields can certainly post to individual fields... that's what they're for.
You can also have single Checkboxes widget that spreads its answers out across multiple fields, though you need JS to make that happen.
How would the code/approach change if all the information would be stored in one, not separate fields in Marketo?
If you're using a semicolon-delimited field, add the values to a list and then you can use the handy .contains():
#set( $indivValues =  ) #foreach( $value in $lead.multiValuedField.split(";") ) #set( $tmp = $indivValues.add($value) ) #end #if( $indivValues.contains("bird") ) bird is in the building #end