HI,

Overlapping is possible by specifying a negative number. However, this does not mean that planification will necessarily take this into account, First of all, calculation depends on ongoing priorities and availabilities of resources.

Regards

Thanks for you answer.
It works! Probably , I have forgotten to tick the automatic update of the Gantt 😉

Regards,
Jp

Perfect. Indeed after making changes, the automatic calculation is done automatically only if the user is on the planning screen and the box is checked. Otherwise from another screen even if the box is checked, you have to manually restart the calculation by clicking on the main button after coming back to this planning screen. This protects against inappropriate recalculations.

Alainforma.