The FlexPulse portable PEMF device has 2 separate ports for the coils. Each coil has a long lead so that you can easily adjust coil placement based on your needs. The maximum intensity the FlexPulse can produce is 200 gauss. Plugging in 2 coils at the same time will reduce the power output of individual coils and drain the battery faster too.
Coils can be placed anywhere on the body
Here are some examples:
Thymus gland, immune
Ensure that the coil is situated so that the side with the large circle printed on it is facing the body. The coil may be secured to the body using a wrap or band (such as a sweat band or Ace bandage) or with athletic tape. The coil may also be held in place by being tucked under snug-fitting clothing or in a pocket.