Scripts in DHCP Server

Hello For all Mikrotik people there..!
for learning and testing purpose anyone try to use Script in DHCP-Server configuration..?
how it work, when we can use it..?
DHCP-Server.PNG

It runs when the DHCP Server assigns or de-assigns a lease.
You can use it for whatever you want, maybe add/remove an address to an address list? or add/remove a queue?