Crystal Reports Date-if then else

Message

   First time posting so I hope I have used the correct location.

I am using XI and need help on a if then else formula for dates.

We hire our temporary employees 60 days from their start date, however we only hire on the 1^st and the 16^th.

So if their start date is 1^st-15^th they would be hired +60 days on the 16^th. If they started on 16^th-31^st then they would be hired +60 days on the 1^st.        
Example
Org hire date is 04/24/17, his temp to perm date would be 07/01/17
Or
Org hire date is 05/15/17, his temp to perm date would be 07/16/17
I am having a heck of a time trying to figure this out.

Thank you

Darla