In my mod I have a custom merchant with his own shop. I want to make it possible that you can invest in his shop. Any idea how to do this?

What I think, to start, is to make sure the merchant have the right voice, so the response when you do make an investment, is available. I also think it might be a default script that gets added to the merchant, and there might also be a leveled list involved somehow. If anybody knows how to makes this happen, pls.