If you're to set up the company's head office details, as well as its warehouses, you can do it through General Settings in Odoo.

Customizing the Main Company Settings

1. Go to Settings > General Settings > Companies > Update Info

2. Update the following details: 

• Company Name
• Address
• Phone
• Email
• Website
• Tax ID: Australian TFN
• Company Registry: Company Domain
• Currency

3. Click on Save

Setting up Other Companies

1. Go to General Settings > Companies > Manage Companies > Create

2. Fill in the following details:

• Company Name
• Address
• Phone
• Email
• Website
• Tax ID: Australian TFN
• Company Registry: Company Domain
• Currency

3. Click on Save