Upload this file in the Mattermost System Console > Plugins > Management page to install the plugin, and enable it. To learn more about how to upload a plugin, see the documentation.
Next, to configure the plugin, follow these steps:
After you've uploaded the plugin in System Console > Plugins > Management, go to the plugin's settings page at System Console > Plugins > Statuspage.
Specify the team and channel to send messages to. For each, use the URL of the team or channel instead of their respective display names.
Generate the Token that will be use to validate the requests.
Hit Save.
Next, copy the Token above the Save button, which is used to configure the plugin for your Statuspage account.
Go to your Statuspage account, paste the following webhook URL and specfiy the name of the service and the token you copied in step 8.