The idea is simple : in the GUI, an enable/disable toggle is now associated to each motor, on the right slide of each motor speed vertical slider. So then we can easily enable/disable a motor with these toggles, and once the "write" button is pressed, (don't miss to press write each time you change the value of a toggle !) and once the copter is armed, we can see how good/bad the selected motor and its propeller contributes to the global amount of vibrations. By slightly modifying the propeller position relative to the rotating part of the motor, we can then find the best propeller position where we have the lowest amount of vibes. Repeat for each motor, and voila ! Your copter is perfectly dynamically balanced. Enable again all the motors (don't miss to press "write" button) and then enjoy a vibe free flight....
In two words, these toggles allows to individually optimize up the propeller position on each motor, while the GUI is used as an "vibroscope"....(Tip : use the scale value to zoom on the graph...)
The mod is based on code release 1_7, and there's only code added relative to these toggles, nothing else has been added or removed. Warning, as the GUI has to sent to the arduino the motor toggles state (communication protocols has an additional parameter), and as the arduino has to store the state of these motor toggles, this DynEqMultiWiiConf_17 GUI can only work with its associated DynEqMultiWii_17
Note : the read button allows to retrieve the current motor toggle values stored in the arduino eeprom.
This mod helped me a lot to have a successful quadX maiden....till I had a propeller lost while in flight....and crashed....
So it will help me again to dynamic balance the new motor and its new propeller...

Thanks to the whole community for this fantastic project !
Jibeer