how do I change this other icloud I'd for I can install my apps
we need help install or apps on our new device?
Question marked as
“We”?
An iPhone is associated with exactly one user. Each user requires her/his own, unique Apple ID.
Apps are associated with one Apple ID. Another Apple ID can generally not access these apps - that person individually selects her/his own apps.
However, Family Sharing is available if appropriate.
What is Family Sharing? - Apple Support