The Objects filter group in the Filter Pane of the Impact Analysis - Universe tab consists of a checkbox list with search filter:

With this filter, you can limit the displayed BI data to instances of the selected universe object(s).

There can be several objects of the same name in different environments or universes.

Start typing a object name you are looking for in the Quick Search control, and the list will be limited to object(s) that contain your input.

There is an additional item (All) in the list of objects. Use it to toggle between all objects being selected and all objects being unselected.

If all objects are selected, or none of them, then the Objects filter is not applied, and it does not limit the data displayed.

 

 
See also

Universes