Plan a task in few places

Hello, I request feature that allow me to place task in few different time block. Cause task is quite big and I estimate may take me for example 20h or half a week.

I would like to plan this task in few days, with different time and duration. Monday time 10-15 PM, Tueday 8-14:00, Wednesday 13-19:00. Allow me to split this big task into smallet chunks.

Time duretion might be count in task how much time we spent on it.