c 1-41,43,45to define these levels to be doubly occupied.
alphalevels to be occupied,
betalevels to be occupied. Or simply,
u 1to get singlet, triplet or doublet occupation pattern.
c 1-41,43,45levels to be doubly occupied;
o 42level 42 should be partially occupied. You will then be asked to specify the occupation. If there are more open shells you have to repeat, since only a single open shell can be specified at a time. Watch the headline of the menu, which tells you the number of electrons assigned to MOs.