What happened: John Lynch said the coordinators will share leadership duties across the staff. Shanahan is eager to resume full work but recognizes he is not ready.
Why it matters: Shanahan's limitations follow a July 14 car crash, with the regular-season opener set for Sept. 10. Foerster will retain his offensive-line duties during the temporary assignment.
By the numbers: Foerster is entering his 11th season with San Francisco and his first as assistant head coach.
What to watch: Camp practices will provide the first look at how Foerster and the coordinators divide responsibilities.