This is a different manual, but the relevant section says the same thing;
"First, you need to specify how to run the slide show, as follows: On the [View] menu, click [Slide Show Options] to set up the options."
As mentioned before there is only a "Window" option next to the Title, top left.
The version of ImageBrowser EX is 22.214.171.124. I think this is new and this may be a bug?? I went onto the canon.co.uk website and it says that ImageBrowser is not supported in OSX 9 (Maverick), however it adds the following :
"1.4.0 will be released via AutoUpdate in late November 2013". Clearly this part of the website has not been updated.
I suspect I will have to live with this for the time being, and/or report this as a bug to Canon (somehow?).
After typing the above I went back to ImageBrowser and found how to do it !!!! Once a slide show starts, in the 'options' that appear at the bottom of the page (i.e. pause, back, forward, end, etc.) there is a 'cog like' option. I clicked on this and low and behold you can change the time of each picture slide using a slider. Pity the manual does not match the software !!!
Sorry to have troubled you with this. I may have found it in due course, once I stopped banging my head on the wall !!