Planning problem for users

Hello,
As the title of this topic indicates, I have a user problem, I explain myself.
I created several users with the default user rights, I just assigned a screen to each user so he could access a single screen. When I log in to the account, I create a layout and when I want to schedule it in ‘Schedule’, I do not have access to the layout I created.
The only way I can plan my layout is to go to ‘Layout> Plan Now’ but I can not choose the date of my planning.

Thank you for your understanding

Quentin

Can you confirm the version of CMS you are running? Also can you confirm if all of the Users you have created have the same issue selecting a Layout that they created when using the Schedule option?

Many Thanks.