are these events that you wish to edit--repeating or one time?
if they're repeating, it'll have to be done on desktop (or, change them to one time event and then edit)
if it's only one time events--they can be changed on the phone
tap calendar--tap event--menu--edit event--scroll down to REPETITION and change to ONE TIME EVENT--now click on the FROM date
this should be the resolution.
Ok, this solution didn't solve it exactly, but put me on the right path... Thanks!
Here's the situation...
Yes, these are events that are repeating. I thought it was more than just the repeating events, but upon second look it seems to be just those that are repeating.
And yes, it looks like if I want to change the entire series of repeating events, I have to do that from the desktop. However, if I want to change just one event of the series, I tap on the event, choose edit event, then choose "just this event". Then I have to click save, which gets me out of the edit screen, then click back on edit event and then I can change the date/time.