Core Q&A Expanded Answer
Intent directs Tuatha Time Magic toward the temporal destination or subject being sought. Time-Walkers such as Breanna Ban Morna, and later Eoin Mac Cairbre, travel through time and space through intent and can take other people with them. Livie's Síol-Radharc applies the same intent-based targeting principle to finding Time-Threads relevant to a specific person, event, or proposed action.