Write a custom Action. Here's a tutorial that goes over the basics, and you won't need more than a basic one.
Essentially, you just want to run the following line of code twice (once set to FALSE to disable skipping, again set to TRUE). You could link the true/false flag to a variable, so that you can use the same Action: AdvGame.GetReferences ().speechManager.allowSpeechSkipping = false;
Place that in your Action's Run function, and it'll disable speech skipping.
Comments
Essentially, you just want to run the following line of code twice (once set to FALSE to disable skipping, again set to TRUE). You could link the true/false flag to a variable, so that you can use the same Action:
AdvGame.GetReferences ().speechManager.allowSpeechSkipping = false;
Place that in your Action's Run function, and it'll disable speech skipping.