Assuming you have the Timeline window open, click the little drop-down arrow next to the number (the delay time) underneath the frame. Click a preset number or enter your own custom time.
Take note the common ways of selecting elements applies here. e.g., Using Shift + click selects a number of frames and you can change the delay time for all those frames at once.
thanks for replying....i click on an arrow that's at the end of and individual photo in the timeline but it called up a box called motion from which i can choose between Pan, Zoom etc
You must be in video timeline mode. Click the button in the lower left of the Timeline window to convert the whole shebang to a frame animation.