Power Point Contents Slide

Hi there,

Following my 2010 training last weke with Nafeesa I have a follow up question.

I have recently been working on a 40 slide Power Point presentation & wish to add a Contents slide. I can see there is a button at the top of my screen that allows me to do thus by simply highlighting the relevant slides & clicking on that said button.

However, this only works for the first 3 slides, if I highlight slide 4 onwards the button is greyed out.

My Master slides complete with headings are all in place but from slide 4 onwards the button is no longer accessible.

Is anyone able to advise why & how I get round this?

Thank you.

Kate