Find if a list member has already be choosen in a line item in list format

Hello,

I have two different lists of employees : the 4.0 list the people that we planned for the budget and the 4.2 list the people in the reality.

I couln't link the 2 numered lists because, the matching of the 2 lists can evolve from month to month.

I created a module in which the user choose wich person from the 4.2 list make the job of the person we planned in the 4.0 list budget. 3 people max can be affected to the same job in a month (that's why i have 3 line items), but i we saw it from the 4.2 list point of view, each personne from the 4.2 list can be used only once in a month (he cound't do 2 jobs).

The goal of the last line item would be to show in a bolean format which person from the 4.2 list has already been used to match the 4.0 list in either the 3 first line items. the problem is dimensions and i can't find a way to avoid it. i could do this manualy but i seek for an automatique solution.

I hope i have been clear enough, and apologize for my poor level considering writing in english 🙂

A) the blueprint :

the module in xhich the user match the people

c) the result that i would like to reach