Not that I know of; well other than the
Mapped Keys 101 video, combined with the information and video on the
Target page
If you use the Mapped Key Wizard from the Wizards Menu to create a Straight Broadcast.
For the Key Map selection, select Combat, hit Next
Then select Straight Key Broadcast, hit next
Then mouse click in the "Press a key combination here" box, then press 1. It should put 1 into the box below. If you double click and you also have Mouse1 in the box below, click on that, and press DEL key to remove it
In the Target for Keystrokes box, type in (yep type it) "is1,is2" without the quotes.
Click Finish.
Then in ISboxer in the upper left pane, goto Key Maps -> Combat
Find your new Mapped Key in the lower left pane which should be called "1 (Hotkey: 1)"
Click on the + sign, so you can see Steps
Right click on Step 1, select Copy Step to Clipboard
Right Click on Steps, and select Paste Step from Clipboard
Left click Step 2, on the right you will see some Actions. Select the first Action
Change the Target (yep type this in too) of the first action to "is3,is4" again, without the quotes.
Then on the File menu, select Export to Innerspace.
This will send the 1 key to both slot1 and slot2 when you press(and release) the first time, and slot3 and slot4 on the second press(and release), and will then cycle back to step 1 on the third press, etc.
EDIT:
Actually, that one is fairly complicated. This is easier.
If you use the Mapped Key Wizard from the Wizards Menu to create a Round Robin Straight Broadcast.
For the Key Map selection, select Combat, hit Next
Then select Round Robin Key Broadcast
Then mouse click in the "Press a key combination here" box, then press 1. It should put 1 into the box below. If you double click and you also have Mouse1 in the box below, click on that, and press DEL key to remove it
In the Target for Keystrokes box, select Window: All w/Current
Set the Activate when the Hotkey is: to "pressed OR released"
Click Finish.
Then on the File menu, select Export to Innerspace.
This second version is a little different in that it will send to slot 1 on first press, and slot 2 on release of the key, and then slot 3 on second press and slot 4 on release of the second press, so there are slight delays between each client performing the command.