text pop up when move mouse over in powerpoint

Hi everyone,
I m struggling !! I wanna link an image of my slide to a text that appears when i move my mouse over or away from it. All that in the slide show mode.
I know it's got something to do with hyperlink but I can only link it to a web address or a program. I just want a text, explaining the picture. I ve found the way on pc, it's 'bookmark' but can't find it on mac... ?



Hope that make sense and that one of you have the solution.
Many thanks for your time
Best
Pierre

It should be the exact same way. Just use hyperlink and then click on screen tip and put in the text you want to display.

Thank you for your fast answer!
The thing is that i can only use the screen tip if i put a web link otherwise it doesn't let me validating it..

Just put a fake link in - or a link to someplace in your document.