Set up VAT and AIB

I’m trying to set up VAT and AIB for my company
And the routes nesting are kind of very broad for me to find what I’m looking for
Please can I get help, I’m new to the forum and I hope my tasks are going to get easier with the help of you all.

I don’t know what this is.

« VAT » or « TVA » in french.
Translate every post you find on this in this forum.
Your solution are probably already wrote.

like this :