Select objects in the correct order
I'm trying to learn how to select objects in the right order. for example show layer XXX when objects 1,2,3 have been selected in the correct order. The order may be 2,3,1 and then show layer. I'm happy how to display the layer once all the objects have been selected, but its about selecting them in the correct order.
Looking at creating something like a safe they have to open to get to the next level, hope this makes sense.