Use Isolate and Isolate Components to turn off visibility of all components except the components you selected.
Use Show or Free Move to display relationship and error glyphs in the graphics window. Highlight a relationship glyph and use the context menu to select Isolate. The component pair that participates in the relationship are displayed. All other components are set to Invisible status.
You can progressively isolate individual components by starting at a high-level assembly, and work down the browser tree, isolating to smaller sets of components.
Use Undo Isolate instead of Undo to restore components to the pre-isolation state. Undo "backs up" through the last-performed operations in reverse order, including isolation. In the browser or graphics window, select Undo Isolate in the context menu. Component visibility is turned back on to the state before they were isolated, but unlike Undo, operations performed in the isolated state remain intact.
Undo Isolate is available only after you isolate components.