Easy way to copy task sequence from computer to another go to
%WINDIR%\System32\Tasks
Copy the task you want from Computer A to a usb stick or over the network
(you cannot paste the task directly into the tasks location as they are reference in the registry [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache] )
On the other computer open task scheduler and click on import and go to the location the task is stored