Hi,
In RM2/RMC there is level to time relationship for carrying out spell research, spells level 1-5 take a week per level, 6-10 take two weeks per level and so on. In RMU there is a formula of level squared plus 5.
So I know the rule for the oldest of RM versions and the newest but what is the rule for RMSS and HARP? Can HARP characters even do spell research?