Once you have created your bot, and have tested it, you can choose to deploy it on various channels. These channels can be WhatsApp, MS Teams, Facebook, iOS, Android, etc.
All you need to do is select the Channel you want to add your bot on from the Platform dropdown as shown,
Once you select the channel, you will have to populate the fields given on the screen with the appropriate information, so as to integrate the bot with that channel, and the same approach needs to be followed on the selected Channel's registered account.
Once you are done with the above, you will have to make changes to the bot too, after which your bot will be deployed on the Channel you selected.