Makes implemented by field visible for all users (Technical name of the field is assigned_partner_id). After installation of this module it won't be necessary anymore to activate developer mode to edit the field.
If you need any help with module feel free to contact. If you are using "Email Marketing" please read the readme file in static folder (simple configuration would be necessary).
If you need help with installation or some additional features feel free to contact
Email: Piotr Cierkosz
Website: www.cier.tech