Appraisal issue on Final Accepting Authority

Hi ,

I am working on Appraisals and I have was not aware how to add the new Particiapant or role.

Present system flow of my client  was as follows:

APPRAISEE-->APPRAISER-->REVIEWER(PART APPRAISAL)-->ACCEPTING AUTHORITY(FURTHER PARTICIPANT)

New Requiremnet from Client  as follows:

APPRAISEE-->APPRAISER-->REVIEWER(PART APPRAISAL)-->ACCEPTING AUTHORITY(FURTHER PARTICIPANT)--> SENIOR ACCEPTING AUTHORITY

Now they are asking me to one more role and form should go to next level.

My query is how to add Senior Accepting Authority for the next level and what role should be given to next level.

Or can we add  senior Accepting authority also in Further Participant along with Accepting Authority.

Please help .

Thanks in Advance

Sowmya