Below is the enhancement done in this hotfix ( 8016 ) release.
SDP-40726: Requester can able to select the Service Request Approvers, while raising the Service Request. And by default the approver field will be moved out of the SR templates. And if required, this field can be dragged and moved into the SR templates. By default users who are all marked as SR approvers will be listed for the requesters to approve, along with the $DEPT_HEAD.
Please refer to the below link for the steps to install the patch.