...
2. On the left side of the window, click Apps and select Upload a customised app.
...
3. Find and select the archive with Koji, and click Open.
4. In the installation dialog, click Add.5.
...
The installation process is quite fast. When Koji is installed, a new chat automatically opens.
...
4. In the installation dialog, click the down arrow and click Add to a team.
...
5. Select a team for Koji and click Set up a bot.
...