Is there a scheduler that can summarize task times?

Question

Task Management

The task is to make a schedule of tasks for the day, so that you have time to COMPLETE more tasks. To do this, I would like to understand the total predicted time of all tasks scheduled for today. Since it may turn out that, having 8 hours at my disposal, I have scheduled tasks for 12 hours. Then you can already decide what to do and what to refuse. That is, for each subtask, there is an approximate understanding of how long it will take. There are even schedulers where this time can be entered into the task properties, but they cannot summarize. Has anyone come across something similar?

Answer 1

EssentialPIM allows you to specify the start and end times for a task, where the duration is automatically calculated, or vice versa.
The calendar visually shows that there are several tasks that are scheduled for the same time, so you can simply move the task to a different time with a simple mouse movement and thus plan the whole day/week/month/year.