Here I am working on odoo community in localhost, and the goal is to manage two companies, each with its own database, and its own access to it, but knowing that I must have access to the content of both companies. Now I have created my odoo instance and created the two databases for the two companies in localhost. How to manage the accesses for each of the companies and the access for me to the contents of the two companies to see if they use the software or not. And how to deploy on an online server with the two databases with the access management. Thanks.