Steps
- Settings → Users & Companies → Companies: create child companies with currency and chart.
- Grant users access to multiple companies; set default company on res.users.
- Enable inter-company transactions module for automatic SO/PO between companies if needed.
- Set company-specific fiscal positions, taxes, and banks on each res.company.
- Duplicate or share products; set company_dependent fields on accounts and prices.
- Assign warehouses and picking types per company; avoid shared stock locations without rules.
- Test a purchase in Company A selling to Company B with consolidated reporting filters.