Employee Success has 3 core features - 'OKRs, Continuous Feedback & Forms'. Not all of these may be required. In such a case, it is easy to enable/disable the specific features according to your needs. As an Employee Success admin or super admin, just navigate to the 'general settings' page and check the ones that you want to make use of.
e.g. In the above screenshot, continuous feedback feature/screens will not be available since that option is unchecked.