Follow the video link you will better understand step by step.
https://www.youtube.com/watch?v=d42RD9iXTBg
Can we video & audio call in this Skype software?
No, we can just send a message and post information only, because this is only for
Advertising purpose only.
Why we need to add Skype account in software?
Because of when the user sends message individually to all, that time no need to log in it
Automatically fetches credential from the account and sends a message.
Is that possible to send the message from two different ID at the same time just like email
software?
No, At the time you can send the message from only one ID because of the same time not
possible to login in the same browser.