Shared tasks and days with no effort allocation

We are moving to a new structure which would mean 2 people need to share a task. It's a shame we can't have it allocate different dates to them on the same task, but we're trying to work with that. If I allocate one task to two people, add time on the first few days for one, then time on the remaining days for the other, the days with 0 hours are still showing in the workload. This is making the workload messy, as our people work on multiple tasks at once. I see that the (status) colour of the task gets deeper if they have hours allocated, but it's not really too clear for everyone. I tried to filter by 'active tasks with effort' but it still shows me the days with 0 hours for me. Is there anything I can do with a filter, or in a dashboard, or on 'My To Do' etc, where our people could instantly just pick up the tasks which they have hours on for today?

We currently have multiple subtasks and it's really a hindrance I want to get rid of. Thanks