modifying section using preset

Hi,

To make updates to 'bunch of section editors', you can either:
1. add the fields using the Section Editor for each, one at a time.
or
2. open up the schema files for each of the Sections and add the fields in that way. /data/schema/

If you haven't added any content into the system, another option is to delete all the new section editors and recreate them with the updated preset (with new fields).