The Persistent Menu brings users directly into the top-level features and flows in your bot. It shows at the bottom of the screen so people can quickly access those buttons.
The persistent menu can have up to 3 items.
Each item can:
Open url
Send message
How to setup the persistent menu
In the side navigation there is an option under Settings.
Once you've set up the persistent menu, for it to start appearing in chat on desktop you need to refresh the page.
If on mobile, you might need to force close the mobile app and open it again. It is sometimes cached for up to 2 hours on mobile.
Disabling text input
From the persistent menu screen you can also disable text input completely.