Webform tab

This is documented: https://www.drupal.org/docs/8/modules/webform/webform-cookbook/how-to-al... →

Sorry I previously gone through the link but what I understood it is about removing one tab and altering an already created tab! But what about adding new one?

Sorry that was abrupt and after all, I am the one that moved this support issue to this module's queue. But to be honest your best bet for support on Drupal Core APIs is to read their documentation and ask in the places I mentioned in the prior comment. Support requests in Drupal Core can site for months or years without an answer.

Can you explain where you are with implementing this and where you are stuck?

I am closing this issue due to inactivity. Reopen it as necessary.