Hi nicolas,
Regarding #3:
Some merchants want to be able to not have a "no" to force the options with variants to be mandatory.
If you want the system to automatically add a "No" choice for all the options with variants, you can go in your PHPMyAdmin and open the hikashop_config table. There, add an entry with the namekey add_no_to_options and the value 1
And if you want the "No" to be selected instead of the default variant, you can add an entry with the namekey select_option_default_value and the value 0 at the same place.
I'm a little scared to try this in case I mess things up - but I'm gonna try.
1) I'm assuming this change to the table will not be overwritten when there is an update?
2) Will all my products have/use this default or just options with variants?
3) Can you tell me if where I've indicated on the attached photo is where I should add the info you indicated?
4) Also, it appears that the rows are repeated. Do I put the content only in the first section?
Thanks!