Using named ranges across different options

Hi,

I would like to use named ranges to help explain the formula used to arrive at a solution. At the moment I have to click in the cell and then look at the cells used and look across to the title of the rows.

So for example, performance = D3*D4*D5*D6

I would like, performance = vehicles*availabliity*utilisation*TKM.

That is easy if I have just 1 option. But what if I have 3 options? Naming each cell would be a way to do it but pretty laborious, is there a 'smart' way to use named ranges here?

Thanks in advance.