I am new to the the semi-auto shifting on the RTS SE5. They say to shift to 2nd at 22 to 28 mph. What are the MPH to shift into 3rd and the mph range I can be in, in 3rd gear.. Then what mph can I shift into 4th gear and the mph I can stay into 4th before shifting to 5th. I am not good at RPMs.. guess I will have to learn.

Shifting from:
1st to 2nd gear - 22 to 28 mph
2nd to 3rd -
3rd to 4th -
into 5th - 65 mph and over

Are there specific mph's that I need to know or that would help me on down shifting, too?

I rode a Harley Heritage and I just knew when to shift manually - not sure about the semi-automatic shifting. I don't want to screw up the bike by doing it too early.
Thanks you..