How to properly design a worksheet to logically associate various items

I am working on an accident analysis application.
The first step in the process is to identify the Accident Sequence of Events.
The second step is to identify the Conditions associated with each Event.
The third step is where I am having a problem designing the worksheet.
The third step is to identify the six Causal Factors that are associated to the Events and Conditions, if any.
The six Causal Factors are:
What equipment failed and how it failed
Who did what wrong?
How/What/Where/Why/To What Extent/Under What Conditions?

How do I pull together the following items on worksheet “Step 3 - Define Causal Factors”
1.      Accident sequence of events
2.      Conditions
3.      The Causal Factors that are associated with each  Accident events and accident conditions
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As a quick evaluation I just noticed that in sheet Database the Col H and I have Error #REF this means that the formula there does not link to a correct Cell is this normal ? Does Col H and I need to exist if yes then where they would point to ?

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cssc1Author Commented:
The database sheet should not be part of the application. Sorry, I should have deleted it.
cssc1Author Commented:
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