out of combat (also in combat possible)

1. set with die small buttn [+] [-] the number of the swap button do u need
2. set the swap raidmember with the [add] button

for example: A Shaman with a Shadowpriest (mana-totem)

3. Tipe the names of the raidmember in the editboxes or use the fasttargeting button
(the first textbox is for the active member "shaman" die second for passive "shadowpirest" but is it not important)
4. save the swap-combo with the save button

in combat

1. push the swap botton to swap the active an passive player together
2 push again to swap back :)

console commands

the slash-name is frs

/frs help
list of the commands
/frs show
show the frame
/frs hide
hide the frame
/frs lock
/frs unlock
lock or unlock the frame on your display

NOW

interface note for comands
swap players with macro commands
or other addons
sytax:
/frs swap player1-player2
/frs swap thrall-illidan