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Simple way- tap the lcd screen.
Look at the lower right hand side you should see " iAuto " pop up.
Select that and it should turn green. (You can go into settings later and fine tune things to your liking manually. But I find the iAuto does almost everything perfectly for me, so I leave it on.)
Now test the macro setting by moving your camcorder close to an object. You should see a Green Flower symbol that indicates the camcorder has automatically switched over to Macro mode.
You record video and move the camcorder closer towards an object. You can now also switch over to Camera still pic mode (button to the left of the battery,) and use that to take still Macro shots.