CTC Break up with performance-linked incentive

Hi ,
I have been asked by the management to prepare Performance linked incentive(PLI) for field employees. Can anyone please suggest me the format of salary structure with PLI.
Please suggest that what all to be taken in to account before introducing the PLI in CTC.
Please help
Regards
Sabnam

Field employees is simple common term. Are they into sales / marketing/ purchase/ service/ installation?

Field employees e.g. Sales, Service, Collection executive are also included in this format....