Password verification for organizations

[maksym]

I need to create function for password verification. I want to create form where user will do some action with adding comment that will go to db and enter password so if it will be correct, then action will be continued with some other functionality.
Found this topic

Validate username and password without token

Hi In one of my scenario ,that is change password section, first I need to check the user entered current password is correct or not ? only need to give permission for change password if the old password is correct. How can I check the password entered is correct with out creating token again ? Is there any other api for this?

and seem answer there is not working for organization, I can’t even add password grant type for app that have organizations