Devise Token Auth customised routes for additonal endpoints

I'm trying to setup custom routes for Devise_Token_Auth for additional endpoints for my User model. Here's my default devise_token_auth routes.

mount_devise_token_auth_for 'User', at: 'auth'

Now, I want to add routes for some endpoints which are defined in UsersControllers. e.g endpoints are with name:

• signup_email
• verify_mobile_signin
• register_sports_complex

which are post requests. How can I define routes for these additional endpoints which are not already defined in Devise_token_auth controllers. My UsersController.rb file is in directory custom_users/users_controller.rb.

Any help is much appreciated.