Hi, I have this problem:
I have to represent on a map some objects that, during some campaigns, can be moved, removed or positioned.
Each campaign must have a layer associated with it.
Selecting, for example, the current state must be visible, which includes all the objects present and their last position.
For example if an object is removed during the last campaign it must not be visible, but if I deselect its layer, leaving the previous campaign layer it must be visible.
I therefore want a "historical" view of the operations carried out.
how can I do? Suggestions?