Checklist onboarding task how to performer HR follow after a worker task?

Hello ,

We would like in check list tasks to have a take first assigned to a worker as a performer -

And the second task - once the worker completes the task I mentioned above - to have the HR (by area of responsibility ) performer to perform the second task.

How is it possible to implement ? To have the HR task performed upon the worker performing the first task ? (even if i put sequence first the worker task then the HR - what event etc should i use to make it work)

(even if i put sequence first the worker task then the HR - what event etc should i use to make it work)