You cannot copy a policy and add it to another entitlement; policies are entitlement-specific.
To copy an access request policy
- Navigate to Security Policy Management > Entitlements.
 - In Entitlements, select an entitlement from the list and open the Access Request Policies tab.
 - Choose a policy and click 
Create a New Access Policy from the Selected Row.
 - Edit the new policy's settings as desired.