Task Interval Scheduling within Time Slots

When I schedule tasks within a time slot, the tasks are set at specific intervals. For example, if my time slot is from 6-7pm, and I have task A at 6pm and task B at 6:30pm, everything works fine initially.

However, when I move the entire time slot to a new time, say 7-8pm, both tasks get scheduled for 7pm, instead of keeping the original 30-minute gap (task A at 7pm and task B at 7:30pm).

It would be great if, when moving a time slot, the system could automatically preserve the time differences between the tasks within that slot. This way, task A would move to 7pm and task B to 7:30pm, retaining their original intervals. I believe this would make the scheduling process much smoother and more intuitive.