Can't find the Ken Burn slideshow settings
I'm trying to build a picture slideshow and I'm using the Ken Burn theme. However, I can't locate the start/end controls that allows me to adjust a picture if it's zoomed in too much, etc. Are these controls gone on the latest version of iPhoto or am I overlooking them?
MacBook Pro with Retina display, OS X Yosemite (10.10.3)