Jill, If you mean within a gallery you've created, eg Pink Flowers.
I suggest you go to that particular gallery when you are signed in.
Underneath each image you will see: Position and a number in brackets.
0 = seeing an image first.
down to however many images you have in a gallery.
Click onto the word Position and then choose the number from the list.
Once you've changed the Position number (by clicking the down arrow and choosing a number from the list), you will see it re-arrange that image and all the others in their correct order, almost instantaneously! You don't have to do anything else. It's fun watching it happen!
Good luck!
Cheers,
janina
11oct
9,38pm Edit:
Well, Jill, I stand corrected!
I've just gone into one of the galleries I created to copy an image code.
I notice that doing this within a gallery is no longer possible. No good! Wonder why that's been changed...
Only change/choose when one is in Images mode.