The positioning of any EM lights must also comply with the building Fire Risk Assessment, so as a Spark, the FRA is required, it is doubtful that you are competent to undertake a suitable and sufficient FRA TBH.
Fitting it comes pretty kuc under BS7671, with a few changes.
Your boss should be telling you where to put it, or giving you suitable and sufficient, information, training, instruction & supervision to ensure that the job is done correctly.
As you are it seems employed, there should not be any personal comebacks on you.
However, unless your boss can prove that you as a company and you personally are competent to undertake the design then the company insurance will be void, I seriously suspect.