Script Update Automatically Status between Dependent SR - Parent Request & Child Request

I am looking control status Status between Dependent service request where Parent and child to be updated between each other automatically and to matched accordingly

for example When Child Set as Under Development - Parent will be Awaiting Development
when Child set as Internal testing Parent Will Be Open
when Parent Set as User Working Child status will be User Working
When User Closed Parent Ticket, Child Ticket will be closed.

so how we can achieve this is essential Status Management between Business Analysis and Developers

Regards,

Ahmad Al Shami