Calendar planning - sorting, filtering grouping

Request is related to Calendar view. I am requesting to add possibility to filter, group and sort our task in left panel.

Right now if we have a quite complex system with weekly goals, quartally goals or yearly goals it is hard to plan, arrange, notice our most importang things to do.

Examples
I have something that I am calling weekly goals and yearly goals. I do not want see my yearly goals (task) in Calendar view → Filtering would be helpful

Grouping if we have goals related to personal life and work life to easy recognise where what I have to plan. → Grouping would be helpful

If we have clear view of task with highest priority and would need to group by projects (We have few projects on-going), we would need sorting for this. To recognise which task should we start right now and add some clarity. - Sorting would be helpful

Each of these features would help us to manage complex personal and work projects.

In most apps when we have Project with high priority adn task was not marked as high priority, task will be move to “Lack of priority” group. Would be good to add possibility to group, sort and filtering with properties in higher level object. As hierarchy Project → Task. (Other way yo resolve that is to add inheritance properties - vary on use case - if to much hierarchy would cause isse with hierarchical sorting would be better to consider inheritance)

As I remember Todo-ist have quite nice sorting, grouping and filtering feature. They figured it out how to combine sorting and grouping in hierarchical way. When I was using it a long time ago I was impressed, still I am. Apps rearly have similar feature. In complex system when we have a lot of objects, projects and topics this would be a greate way to add structure to Routing.