If you want these to be configuration variables in the database you can add these with a little SQL - see the konakart_demo.sql scripts for examples.
Here's an example for convenience:
INSERT INTO configuration (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) VALUES ('Warn of Duplicate SKUs', 'ADMIN_APP_WARN_OF_DUPLICATE_SKUS', 'false', 'Issue warning in Admin App of duplicate SKUs', '21', '32', 'choice(\'true\', \'false\')', now());
Note that if you do this these will automatically appear to the KonaKart Admin Application for subsequent modification.
Just make sure you set the configuration_group_Id to the group that's most relevant and almost as if by magic (

) your new config variales will appear in the same panels as the others in that Group.
Naturally, you will then be able to access these config variables using the KonaKart APIs from your code.