(PHP) autocomplete with external inclue/require path

Kind time of the day.

I am not so experienced with Quanta and just wanted to ask.

Is that possible to define external include/require path to make this 
compatible with autocompletion feature?

For example,
I am using ini_set() function to define global include_path.

Did any one familiar with it? I am using Q3.5.5, maybe it's sorted in the 
later version?

Thanks.