You followed the steps of How to print staff schedules, but nothing happens? 

Let's make sure Pop up are allowed on your settings:
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Click on the menu of Google Chrome, at the top right.

1. Select the Settings options on your browser
2. And click on Advanced at the bottom of the page,
3. Look for the Privacy and Security section,
4. And click on Content settings,
5. Click on Notifications,
6. Activate the option Ask before sending,
7. In the section "Allow" click on Add, and add app.booxi.bom
8. Then click on the button Add, and you're done.
You should now be able to print your schedules.