This video provides a demonstration of how to restructure data from wide format to vertical format for use with HLM involving repeated measurements using SPSS.
You can download the datasets from here (https://drive.google.com/open?id=1eJFnIl-lHvVU0zITQhSh6pvRbXDGQ3al) and here (https://drive.google.com/open?id=1NGZ8mFlZ939U92bVmHFCKQId5bBxSHoP)