Assign product managers to approve products and product variants in Odoo, restricting product creation and access based on approval.product approval, product manager, approve products, restrict product creation, product variant approval, Odoo product management, product access restriction, sales product approval, purchase product approval, inventory product control, data integrity, product review process, structured approval workflow, product authorization, product approval workflow, approval process, product visibility control, product manager rights, product restriction, Odoo product control, manage product variants, product access security, restricted product creation, product lifecycle management, inventory approval, purchase approval, sales workflow control, product data validation, Odoo customization, secure product access, product management app, approve and reject products, product tracking system