Prerequisites

1. Add apps
   
2. Assign apps

Adding a OIDC app in Zoho One

1. Sign in to Zoho One , then click Directory in the left menu.
   
2. Go to Applications, click Add Application.
   
3. Under Non-Directory Apps, click Add.
4. Name the app, and enter a description if needed.
   
5. Click Select SSO mode, then select OIDC under Sign-In Type.
   
6. Select the type of application you're adding under Application Type.
   
7. Enter Sign-in URL, Sign-out URL and Callback URL of the relying Party in the respective fields.
   
8. Click Done, then click Create.
   To assign this application to users, click Assign Users; to setup SSO to users, click Configure; and complete the configuration by verifying. 

Adding Zoho One's URLs in the third-party app

1. Open the added OIDC app and click Single Sign-on.
   
2. Copy the Client ID, Client Secret, Authorization Endpoint, Token Endpoint, and User Info Endpoint.
   
3. In the third-party's OIDC Configuration Page, paste the copied values into the respective fields.

Testing the OIDC configuration