"nth folder" a bit like "top group" but for the 2nd, 3rd, 4th etc group


We would like an automation which moved tasks in a FIFO manor through groups. Eg just now there is a special attribute of “top group” whereby it doesn’t matter the name, the automations work with the top group.

If i wanted to weekly move items from the top group to another group, that group needs to have a set name. But each group could simply occupy a position in the board with top being 0. Then a rule could move tasks into different groups but it doesn’t matter the group name, just moving from the 1st group to the 3rd group, or the 4th group to the 2nd group etc.

Just an idea!