After installing the Advanced Approvals managed package, which object is enabled out of the box...

 Advanced Approvals Context:

The Opportunity Object is configured out-of-the-box to integrate fully with Advanced Approvals.

Other objects, like the CPQ Quote or Quote Line, may require additional customization.

 Functionality:

Advanced Approvals use Approval Rules, Chains, and Conditions to automate the approval process.

Predefined templates and configurations are readily available for the Opportunity Object.

 Validation:

After installation of the Advanced Approvals package, confirm the Opportunity Object's configuration. No additional setup is required for basic functionality​​.