If anybody wish to use SL-ish function, please input negative value on the "Start Trailing after...".

For example, if the current price is -50 pips, then input -50 or above on the setting. (e.g. -100).
If the Trail Step is 200, the SL will be placed close to -200 from the current price. 

It works and in fact I use this EA in this way from time to time, however this EA's real usage is "normal basket trailing" with "averaging function" so the SL-ish function is a sort of dummy function which still can be used.