Viber bot promote

Hello Again :)

Thank you very much your answer. But I have another question too.
I will conect my bot to my viber public chanel.
Is there any link to can share it with my client to inform them about my chanel.
I would like to share them, or send them a "promotional message" to can use my viber bot also.
The broadcast is just for that who write me before, and subsribers for my chanel.
So how can promote if for new customer.