There are additional tasks features that make working with tasks easier. Here's a brief description of some of them.
Go to the Tasks and projects section.
In the Tasks section, you can view all the tasks that you participate in. Also, you can use quick filters on the top - Ongoing, Assisting, Set by me and Following to view tasks depending on your role in them (Responsible person, Participant, Creator or Observer).
An Administrator and the head of the company can view all the tasks created by any user. Just use a specifically configured filter. Click Tasks > All > click on the search bar > Add field > Task parameters > select Show tasks I don't participate in option and click Search.
The administrator can also view a user's tasks by opening his/her profile page in the Tasks section.
A department supervisor can also view tasks of his/her subordinates in the Supervising section.
When a responsible person is on vacation or dismissed, you need to assign this employee's tasks to another person.
Open this employee's profile page and click Tasks. Select tasks that you want to assign to another employee and click Change responsible person in the list of available group actions.
Select a new responsible person and click Apply.