If an Employee who is serving in a post of any group or sub-group of the Legislature-Parliament Service so intends and makes an application for changing his or her post to the similar post of the same class of other group or sub- group, and if he or she has the minimum educational qualification required for the post so intended for change and completed the minimum service period required for promotion to the post higher than that post, the Committee may, in consultation with the Public Service Commission, change his or her group or sub-group.