With reference to the pic of the tool ^
You put the bottom end into the frame and pull it through, push it up against the cups and hit with a hammer. Put your hand over the cup to stop it firing into the ceiling.
Do the same for the other cup.
@tigeruppercut started
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With reference to the pic of the tool ^
You put the bottom end into the frame and pull it through, push it up against the cups and hit with a hammer. Put your hand over the cup to stop it firing into the ceiling.
Do the same for the other cup.