Bulk modification from client

Using 5.0 with both sao or desktop client. I didn’t figure out how to bulk change many entries, for instance, change a category for dozens of products in the same action.

Tryton does not have bulk modification because it is error prone and too complex to manage correctly with all the on_changes, validations, constraints and access rights.
For the category, we are missing a field that allows to add products to a category.