Dears i face a problem in Manageengine Service desk plus.

In scheduler i mark a technician (technician X) as leave for one week .

When i choose a back up technician for him the processing massage shows up and after hours it is not disappear and when we assign a task to the technician X it remain on it an it is not assign automatically to backup technician . Backup tech is not working 

Would you please help me in this matter.

What should i do?