Some users may find that at step 5 above can use the following hotkeys to directly select the desired radio button position:
Linear series – ALT+L (useful for numeric series)
Growth series – ALT+G
Date series – ALT+D
Autofill – ALT+F (useful for days of the week/months of the year)
The above hotkeys only work this way whilst in the Series dialogue window and combined with the accelerator keys methods below to speed things up further.