First, edit the tables to use the structure you need
Then you need to recreate the presets so that they use your tables structure, select the new from blank preset, then select your table.
on the manage pages tab, go onto the fields and settings section to set the labels, element types, and validation.
then set the pages to be created, and which fields to create.
When done save your new preset.
you can reuse that preset to have it create the tables on a new project.