Absolutely! We can set up a system for registering employees so that only those with the right credentials can get to your company's information. We can also add more security by using an authentication protocol.

Thank you for your answer, but I worded my question incorrectly. I would like to know if an employee without an Odoo license could use attendances? This is a client who has 5 odoo licenses but more than 150 employees.

Yes, it is possible to give access to the employees of the company so that they can register and only with an employee account in Odoo. Here are the general steps you can follow to set this up:

1. Go to the "Employees" app and create new employee records for each employee.

2. In the employee's form, you can set the "Employee Login" field to create a login for each employee.

3. Go to the "Settings" menu, then "Users" and "Groups" to create a new group for employees

4. Assign the employee login's to the employee group.

5. Go to the "Access Control" and set the permissions for the employee group, so they can only access the apps and features that are relevant to their role.

6. Once the employees are set up, they can log in to Odoo using their employee login credentials, and they will only have access to the features and apps that are assigned to the employee group.

Please note that the above steps are general, and the process may vary depending on the version of Odoo you are using and your specific setup. You may need to consult the documentation for further information on how to set up user management in Odoo.

Additionally, you can use the "Employee Self-Service" module in Odoo, which allows employees to manage their personal information, attendance and leaves, and also allows the HR department to manage employee information.