How to automatically adjust task duration

[guy forget]

I use Ms-Project 2019, I have 3 linked tasks one after the other 2.
I want the duration of the second to automatically adjust according to the end of the first and the start of the third. Ex: I have 3 tasks of 1 day, I want that if the third task should start 2 days later than planned, that the second goes from 1 to 3 days.
In summary: The duration of task 2 automatically adjusts according to the end of task 1 and the start of the third.
How to do?

[Author]

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