Hi there!

Let me try and understand your question: you want to be able to create logins through the API and give everyone a default password, say applepie, so that they can login without having to go through the whole process of receiving an activation email, setting a password for themselves and so on. If that's the scenario, I'm afraid that's not possible in Freshdesk right now :/ You can't set passwords for users while creating logins for them. If there are any updates on this, I'll make sure to drop you a note :) Cheers! 

Hi,

You'd now be able to set the password for an user from the UI - read the article below to know more about this feature https://support.freshdesk.com/support/solutions/articles/214401-changing-customer-password

Cheers!