I found, that I can modify the cross-validation object (CVO) which class is cvpartition by modifying several lines in cvpartition.m file from:
properties(GetAccess = 'private', SetAccess = 'private')
properties(GetAccess = 'public', SetAccess = 'public')
This allowed me to modify indices of CVO manually.
I wonder if there are any other way to set indices of CVO without changing the lines in cvpartition.m? This is the case when I want to run Matlab on my campus computer.