How to configure& integrate Okta SSO in Excel Add-Ins developed by angular

I have an Excel add-in developed using Angular, and I would like to implement Okta Single Sign-On (SSO) functionality to enable users to log in through the add-in. I have searched for relevant documentation but haven’t been successful in finding any.

Could you please provide support or guidance on how to achieve Okta SSO integration with Excel add-in?