Bon Jour, Peter,
When introduced in AC 8, they were called Interactive Schedules. Now they are simply called Element Schedules, Component Schedules and Project Indexes (Indices for those of us who spell it that way).
If not in your menus, you can add them via the Work Environment, but I typically find, create and modify schedules via the Navigator/Organizer.
I do not know what it will say in French, but the attached screenshot shows the icons that you should see. Right-click, then click Scheme Settings to create a new schedule, or edit the settings for an existing one. Otherwise, existing schedules can be viewed double-clicking on them in Project Navigator / Organizer.
Karl
One of the forum moderators
AC 28 USA and earlier • macOS Sequoia 15.2, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB