Instagram has allowed five accounts to operate on a single phone, out of which one can be personal, one official, and the other three. Earlier, any person could operate only one Instagram account, but now it is not so. This exclusive feature is available for Android and iOS platforms and makes it easy to manage your personal and professional Instagram accounts from a single device.
If you want to reply to another person's story or you want to participate in their thread, then you can reply to it by clicking on the 'Add Yours' sticker and entering your own story.