Only devices with certain attributes are needed.
There are three important settings: AND, OR and NOT.
Every column in the list has its own filter function that allows you to search for specific things and not only tags.
If you found an arrangment you like, you can make a tag for it with selecting the devices you want to put the tag on, by clicking the Manage Tags Button.
In order to filter specific things, the user can create a new filter. Upon clicking the "Filter" button in the CMDB a window is opened that allows you to specify what this filter does. First you have to select a field that is affected by the filter, you can only choose one at a time. Depending on the field you selected, the conditions you can choose from will change. Select the condition you want and then specify the value that the filed has to, or can't, have.
The Condition button allows the user to add another condition to the existing one. You can choose if you want to cennect the conditions with AND or OR.
If the condition is done, you can also work with the block function. It creates a new block, which functions like the brackets. This allows you to make complexer filter. You can, for example create a filter for the hostname that either has the hostname contain the letter "A" or has the hostname start with "B" and contains "E". In the left hand corner, you can determine if you need to use AND or OR for the condition.