90D Multiple Exposures (NOT combined Frames) - Need individual files

[AndrewLankes]

Hello!

I am trying to shoot bracketed exposures, but not in-camera combined image. I need 5 separate files for example, so I can bring those into photomatix for merging. 

Having trouble figuring this out. Thank you for any help!!!!

[kvbarkley]

You need the advanced manual

but you only get three. Of course, you can run it twice and get 6!