We have been working with the health inspector.

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. We have been liaising with the health inspector on how we should go about with starting the cat cafe.
  2. We have been collaborating with the health inspector regarding how to start a cat cafe.
  3. We have been liaising with the health inspector on resolving issues that involves regulation and byaw which are related to cat cafe.
  4. We have been working with the health inspector regarding indentifying the problem involves and the way we should tackle the problem.

Are the above aentences correct? Please advise.

2
  1. We have been liaising with the health inspector on how we should go about starting a/the cat cafe.
  2. We have been collaborating with the health inspector regarding how to start a/the cat cafe.
  3. We have been liaising with the health inspector to resolve issues regarding the regulations and bye-laws related to a/the cat cafe.
  4. We have been working with the health inspector to identify what the problem involves and how we should tackle it.