Each task can have sub-tasks with durations. We can add duration to sub-tasks which will add up to reflect as total time for the overall task. Ranging from Mins to Days/Months

We can create dependencies between the tasks similar to the screenshot attached. When such linkage is done, changing the start date of one task will trickle down the start date change for all the linked tasks - which makes it easy to manage the dates of the tasks.

Justification for the idea (Why is it important): Any.do has already taken the step of organizing the tasks on Calendar, having this dependency with a Gantt chart display will be a huge feature for adoption by Teams. Some users might argue that we might use a Project planner for such a purpose - realistically normal people understand the sequence of events but don't really buy project planning tools to organize their work- as it would be too expensive & is overkill.

Benefits & Future product ideas based on this enhancement: Having the task linkage/dependency allows us to visualize the tasks in a directed Graph structure - making any.do a second brain - screenshot attached. Currently Obsidian.md is used for documentation purposes using this graph feature.

Similar to other suggested ideas:
- https://anydo.uservoice.com/forums/143587-general/suggestions/43774800-duration-for-each-task
- https://anydo.uservoice.com/forums/143587-general/suggestions/9965256-i-suggest-you-to-allow-tasks-to-be-depended-on-oth
- https://anydo.uservoice.com/forums/143587-general/suggestions/14547648-tasks-add-pre-requisites-task-reliability