Thank you very much for your kind reply!
There is another problem about the DOS block. I tried to analysis the data of DOS. However, every time when I selected some atoms on the right panel showing the configuration, the DOS analyzer got stuck and was forced quit. It appeared many times no matter how I tried to avoid this problem. Now, I have to use the PDOS block instead of the DOS block to do the simulation. This problem did not appear in the early version of ATK, such as 2017 or 2018. Could you please check it?