I very much relate to triggers as people places and things. Very much so. Our work alters are at work, at home it is more me and a couple others. Different alters relate to family, to social situations, to other daily life tasks. They just come out and do their jobs when we are in those situations.
Recently T did some EMDR work with us that helped us be more aware of a different group of alters and since then we have felt so much more grounded and had much less lost time throughout the days. It has been really different. It makes me wonder if we can connect more with other parts too maybe there will be even less lost time and switching.