Answer :
Most constitutional monarchies employ a parliamentary system in which the Monarch may have strictly Ceremonial duties or may have Reserve Powers, depending on the constitution. They have a directly or indirectly elected prime minister who is the head of government, and exercises effective political power.
Constitutional Monarch has "Unlimited Power". He/she can elect anyone for anything, can make a change in constitution etc. & that power transmits from him to his Children.
Hope this helps!
Hope this helps!