can i get some help answering these questions please?

my activity system is car repair process.

1. Refer back to the potentially problematic activity system you identified in stage 2, use the DeLone-McLeanModel of Information System Success to describe the areas in which the existing human activity system is potentially not successful.
2. Refer back to the potentially problematic activity system you identified in stage 2, describe measures of success (efficiency, efficacy, and effectiveness) for the existing human activity system identified and explain using success measures where the HAS falls short.

c) How would you improve the problematic the problematic activity system (HAS) you identified in stage 2? To respond to this question, you need to:

I. Briefly describe how you would improve the activity system. (What/how would things be done differently). Explain how what you are proposing will add value to the business. In your explanation make sure you explain how your improvements help create competitive advantage for the business. You should refer to the value chain analysis and, in your discussion, identify new or improved primary or secondary activities according to Porter's value model.

II. Use the 'loose' BPMN notation we introduced in the course to broadly model how things will be done in the improved system (as you described in I. above) [[you may insert the picture here or you may submit as a separate .pdf or .png or .jpeg]]

III. Classify the new information system as either: front-end, back-end, customer-facing, or supplier-facing; and explain you have classified it this way.