After showing some animation introduction on slide number 2, I want Powerpoint to automatically move to slide number 6. Is there any way to for me to tell Powerpoint to automatically move to a specific slide without having to trigger a click? Thanks.
Between my suggestions and CharlieRB's I think you have an answer so I'll summarize here.
You can put a copy of Slide 6 right after Slide 2 and have it automatically appear, then proceed with the rest of the slides, eventually landing on Slide 6, the original, again.
Or you could put Slide 6 right after Slide 2, then on Slide 6, add a hyperlink to a custom show composed of slides 3,4,5, and checkmark the option to show and return. You'd land on slide 6, click the link when ready; you'd then be able to view 3,4,5 and when done, PPT would automatically return you to slide 6. You'd want to hide slides 3,4,5 so that when you're done with slide 6, you'd move on to slide 7.
In all cases, I'm using your original numbering, but you'd actually have, in the first example:
and in the second example: