First, you'll need your administrator to set up the Slack/Hipchat integration for your team. Once the integration is installed, you can use the /give command to give a bonus.
The syntax is: /give +points @person for reason #hashtag
For example, if you would like to give John 100 points for covering for you when you were out sick, it would look like this:
- /give +100 @john for covering for me while I was out sick! #help-out
Pro tip: use the command /give help and a private message will appear to help you format your bonus.