For my job I am working doing various technical tasks for a company, which often involves explaining said highly technical details to members of the board or the CEO so I can get them to spend 10s of thousands of pounds on things that will help.
I am new to this job, and am not super used to communicating with such people. I asked advise from my manager on this, and he said that when doing any sort of explanation, make it a PowerPoint, don't make it more than three pages, and make sure at least half of those three pages is pictures. I've received some similar advice on technical communication.
I do intend to as best I can follow this, but I am worried when dumbing it down this massively that I'll appear condescending by over correcting my communication style. I have a while before I am expected to do this job fully since I am new, but have already been asked for some technical advice on issues and want to make sure I communicate at the correct level.
How do I communicate key technical information for making important decisions which cost large amounts of money without appearing condescending or like I am treating them like children?
Other questions don't seem to make the assumption that the chosen ideal to explain an idea is 2 PowerPoint slides of pictures and 1 of words, and I want advice on that particular situation.
As an example, they might want to know what they're legally allowed to do on their products so they can talk to other high up people about how to advertise their products and the broad strategic goals for changing their lineup on shelves, and want to know the timeline of when they can use a particular quirk in the law, how the timelines might change with politics and how I can ensure they can use this quirk for longer and in addition how supermarkets will react to them having this particular quirk so they can negotiate with their ceos about it and make coherent arguments about why its good.
I can't just skip the technical details for this sort of proposal and focus on the business questions, because I have been asked direct technical questions which I need to explain in a simple way.