I have a hard time understanding kmymoney

Hi,

My restaurant is taking off and I really need to handle my accounting more professionnaly.

For that I wanted to use kmymoney, I managed to export my january and february 2026 account reports but I don't know how to export my march report and merge it with the rest.

I also want to export my 2025 register but how do I create another file without deleting my 2026 file.

Sorry if my questions seems basic but all of that is very new to me. FYI I use the french language version of kmymoney, I don't know if that changes anything