How to utilise safety leading and lagging indicators for improvement

Hi safety professional,
This is my first post. My question is;
How to utilize safety leading and lagging indicators for safety improvement??

Safety leading and lagging indicators-
We can rely or wait for accident to identify critical area or scope of safety improvement. In this case safety leading and lagging indicator become very important for safety professional.
Safety leading and lagging indicator give us bunch of data which we can analyze and identify area for improvement.
I can answer many of question on this topic. If anybody have any query.