This is the 2543rd most frequent Chinese word.
留给
"留给" means "to leave for" or "to set aside for."
In this context, "留给" means to allocate or set aside something (time) for someone (family).
你应该把时间留给你的家人。
You should allocate time for your family.
Here, "留给" signifies reserving something (dessert) for someone (guests).
他们把最后的甜点留给了客人。
They reserved the last dessert for the guests.
In this example, "留给" means to delegate or assign a task (the task) to someone (the dedicated team).