Grzegorz,
Thank you for the questions, however, it seems to me that solution 1 is already implemented. Maybe your Group Footers are not activated (Right click on any column header -> Activate "Group Footers")
| Quote |
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| In the group header (or footer), add the summary for estimated time. I'll then group by due date / from date and see the sums more easily |
1. Group tasks by Due Date
2. Right click on group footer under Estimated Time
3. Select Sum
Best Regards,
Serge