

This workflow automates the process of adding a user to a Mattermost channel and sending a welcome message to the channel.

Example: A team lead can use this workflow to quickly onboard new team members by adding them to a designated Mattermost channel and sending a welcome message to the entire team.

## What You Can Do
- Triggered by a manual execution
- Adds a user to a specified Mattermost channel
- Sends a welcome message to the channel

