Here's how to delete a single Task from an Account.
First, go to the Tasks view.
Topics
Accounts
Tasks
Trails
Keys
Settings
In the Tasks view, select the Task you want to delete, then click the delete button on the smart button bar.
If the smart button bar doesn't show this button, it means that you don't need this Task operation so often. In this case, you have to select delete Task from the Task operation menu, you will find the menu by clicking on the three dots on the right. Afterward, the button will appear in the Smart Button bar.
And done.
Nice to know, if you delete a Task by mistake, there is always a way to recreate it. The fact that the required disk space of a Task is so small, allows you to keep the Task in the so called Robogator graveyard without any major impact on disk space. But with the advantage of being able to recreate it at any time.
To do this, your current Robogator instance must have designer mode turned on.