You can provide users with rights to change some task schedules settings themselves.
To provide users with rights to change settings of a task schedule:
Double-click the schedule that you want to set. The respective schedule properties panel opens on the right side of screen.
On the bar on the upper-left corner of the panel, click Rights. The Rights tab opens.
Click +Add user. The Select user or group dialog box appears.
Select the user or the group of users that you want to provide with the rights, and then click OK.