The scenario here is that I would like to add a ‘custom notes’ link to any services with the word ‘postfix’ in the name of the service. I started by visiting WATO and drilling down to a host and one of the services I was interested in adding notes to:
![](http://blog.redbranch.net/wp-content/uploads/2019/10/2019-10-08-12_09_28-Checkmk-Local-site-red-Services-of-host-isp001.ams01.redbranch.net_.png)
Then scroll down and click on ‘Notes URL for Services’
Then click the green button for ‘Create Service specific rule for:’
![](http://blog.redbranch.net/wp-content/uploads/2019/10/2019-10-08-12_13_06-Checkmk-Local-site-red-Notes-URL-for-Services-for-host-isp001.ams01.redbranch..png)
On the ‘New rule’ page that opens add a description, comment and URL to the page with troubleshooting notes.
![](http://blog.redbranch.net/wp-content/uploads/2019/10/2019-10-08-12_17_04-Checkmk-Local-site-red-New-rule_-Notes-URL-for-Services-1024x422.png)
The rule conditions will display a very narrow rule for the particular service on that particular host so I want to widen that to this service to all hosts. So untick the ‘Explicit hosts’ checkbox and change the ‘Services’ parameter from the specific default one to ‘Postfix*’ so that it will apply to all services that begin with the word ‘Postfix’:
![](http://blog.redbranch.net/wp-content/uploads/2019/10/2019-10-08-12_20_21-Checkmk-Local-site-red-New-rule_-Notes-URL-for-Services-1024x447.png)
Saving and activating the change shows my notes icon:
![](http://blog.redbranch.net/wp-content/uploads/2019/10/2019-10-08-12_23_54-Custom-Notes.png)