Hey there @vengat2023 !
It really depends on what you are looking to achieve, but in general if you have organizations configured for your tenant/application in your Auth0 dashboard and are using Universal Login then it should work out of the box.
If you’re looking to authenticate users directly through a specific organization, the following resources may be helpful:
https://community.auth0.com/t/authenticating-users-through-a-specific-organization/84679
Hope this helps!