The shuffled French Setup deck is located near the bottom of the map. If you have trouble "grabbing" a block off the deck, try clicking near the bottom of the deck instead of the top.
Right-click on any blue setup marker to delete them all.
The red mark on each French block means it is inactive. When you activate a French block, right-click on it to remove the red mark.
When you are finished setting up the French blocks, press the blue "flip" button on the buttonbar to turn all your French blocks face down.