If you mean you just want to lay audio, video, light, and other cues against speech in an audio cue, just put them all in a timeline group and move the cues to the time you want like this:
If you have timecode coming in from an external source, you setup the timecode for each cue list and then enter the timecode value to fire each cue in the triggers tab.
In this example I am triggering the Main Cue List from incoming Linear Time Code which QLab is Receiving on ch 8 of my audio interface. . I've ticked the trigger timecode box and set the SMPTE format to match my incoming timecode.
Cue 2 is set up to trigger on an incoming timecode value of 1:00:01:03
Mic