Hi there, I have been stuck on this for days now, and want to get it over with. When I go to creating a new Sales quotation, I have to enter/select products one by one. I have so many products and want to select them all at once.

I googled it, and found a thread of using many2many widget. Now I went to the views from Technical tab in Developers mode, and added the many2many code under product_id. But Either it gives an error when I open the Sales order, or the sales order lines are gone. 

Kindly help me out with this. All I wanna do is to be able to select multiple products when creating sales orders.

Cheers.

Odoo v9 (Enterprise).