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When an app component is clicked, the Quick Navigator will expand and allow one to switch to other app components, or choose the elements to be edited within that app component as shown in Figure 2, Figure 3, Figure 4 and Figure 5.
Figure 2: Quick Navigator in Action Action - Form Builder
Figure 3: Quick Navigator in Action - List Builder
Figure 4: Quick Navigator in Action - UI Builder
Figure 5: Quick Navigator in Action - Process Builder