How to fix assignation for a meeting / comment fixer l'assignation à une réunion

Dear all,
I am Christophe Noisette, a French journalist specialized on issues related to GMOs and seeds. I try to used projeQtor but i have several understanding problem.
By example, we have a CA (board meeting), in 2017, January, 9th. The duration of the meeting is 7.5 hours. But when I ask for the "planning", I have several errors. I can't manage to oblige the planification to use all the ressources to the meeting. The meeting is not an option... So I want to precise it, but where... and is it possible ?
All the best
Christophe
noisette-at-infogm-dot-org

PS : I will be happy if one of you could send me a private email to "discuss" about ProjeQtor. I think I don't well understand some bases, but the manual is quite light.

Please find enclose two pictures which explain better than I can the pb I meet with this meeting.

Sorry, I sent two pic which is not concerned by my pb... My pb is that I want to impose some plannification, and I can... and when ProjeQtor decide to plan some ressources, I can't change it. Even if I reduce assignation... Even If I delete some task. I ask for a new plannification, but nothing change.

babynus wrote: 1) Do you run planning calculation for concerned project ?
2) What is project type ?
3) has project "fixed planning" ?

1) Yes, I did it.
2) I change the project type : i have created a new one which is "projet ponctuel". I didn't know that "project type" has an influence on the plannification. Where could I see the consequences of a special type to the plannification process?
3) Yes, Journal 144 is "fixed planning"