Hi @FChabert,
I love to read your post, thank you for asking the Community!
First, I’d like to share these articles that might be of interest:
- Set up the forecast tool
- Use the forecast tool
I’d like to also invite some of our Top Experts to this discussion: Hi @Jonno_Price, @johnelmer and @Shadab_Khan do you have suggestions to help @FChabert, please?
If anybody else has anything to add and/or share, please feel free to join in the conversation 
Thank you very much 
and have a fantastic day!
Best,
Bérangère