Owner field 'Look for' set default to team

Hi All,

I have two fields Case Type and Owner.  

Now my requirement is, on selection of case type value i.e.,'Help Desk', the owner field 'Look For' view auto set with Team and value auto set with 'Cloud Support' 

We have added team as 'Cloud Support' with 3 members. By default 'look for' value is user.

How can i achieve this task.

Thanks in advance.