So you want to make a Click To Speak game. Here's a guide to getting started.
First, open up TextEditor3. The first thing you'll see is this box:
The name of the player character goes in the box marked PC, and the name of the other character goes in the second box. You can choose to type in the character names now and click Save, or you can close the box without saving. You can open this box again at any time by selecting Edit -> Characters from the menu bar. In the sample game, our player character is Agent 008 and the non-player character is Dr. Nefarious.
After exiting the character box, you're in the main editor:
At the moment, there's only one space visible for a line of dialogue. This will be the first line played when a user starts the game. The drop-down box to the left allows you to assign the dialogue to a character. You can have either the PC or the NPC speak first, but the player only gets to do something when the NPC is talking, so in this case Dr. Nefarious will speak first.
In the NPC's lines, we use asterisks to break up the line into sections. During the game, when the player hits the button the PC will interrupt with a response, which will change based on which section of the NPC's line was playing when the button was pressed.
To add an audio file to go with the NPC's line, click on the button marked Audio on the right. This will display the audio options.
Clicking the button marked Browse lets you select an audio file to play for this line, which will be displayed as a waveform.