Hi, I have Community version of V13, I'm very new to Odoo.
I can't seem to find how can I make it so in contacts, partner_id would have a multi-select function, meaning more than one selection, same with custom field. I believe that is achieved with many2many ? However, I can't change that for partner_id because it just spits out that I should be doing this in python, and as for custom field it just asks me to create a new relation I guess?
Any help is appreciated. Thanks.