Getting Started channel is created by default. It gives users a guide on how to start working with Leverice. It's opened automatically once a Workspace is created.

Scroll down to see the major information necessary for starting work with Leverice.

You can also take a tour of Quick Guide which provides you with more information about working with Leverice.

You can leave Getting Started channel clicking on Leave from the channel context menu.

If a member leaves Getting Started channel, this user can subscribe to it again.
First, activate the filter Show not subscribed channels.

And choose Subscribe from the Getting Started channel context menu.