add a new select field (drop down) in supplier

[pablobuendiaelvira]

Hello,

Sorry for my awful English.

 

I need to add a new select field (drop down)  in supplier and then save the selected element to the bbdd. Can you advise me? Thank you!

 

It´s the same that add a new field in product but Idont know what files to program.

 

Thanks