Inside of the CultureBot admin page (easily found inside of your Slack org), you'll simply want to select a channel (or channels) to send the watercooler topics to, as well as the time of day and days of the week for them to run.
Next you'll want to click the 'select topics for water cooler' button which will give you plenty of categories of conversation starters to choose from. Want something a bit more team-specific? Click the 'view/add prompts' button to add your own!
And... that's it, really! In fewer than 5 minutes you've setup your team for more interesting and engaging conversations inside of Slack. A word of recommendation – make sure you aren't sending too many messages too often!