Here are other types of shift agents:
8. Order of Importance. First, in the first place, furthermore, equally important, best, above all, just as important, of minor (or major) concern.
9. Transitions of Place. Before TV replaced radio for drama programs, a common transition would be something like, "Meanwhile, back on the ranch" (or "in Washington," or "in Bill's drugstore.") That worked even though they're a bit heavy for today. Here are three simple ones that work: After we reached, in Atlanta, Waiting on the other side of the bridge.
Now that I understand transitions,
they're easy to write.