How are Zoho People users tracking employee targets in People?

For example, my marketing assistant has a target of "Collect 10 new customer testimonials every month".

I want to record attainment for this target on a monthly basis, then add it to their appraisal. 

I know I can setup KRAs and goals, and assign a 'progress %' to a goal (for example, 5 testimonials collected last month would be 50% progress).

But I'm not sure that's how the KRA and goals module is intended to be used.

Would appreciate any feedback from anybody successfully using People to track employee goal attainment!