There are 5 types of data that can be scrolled. You can identify them by the button which is placed on the right side of edit box.

Scroll a Number

Ctrl	1
Shift	2
Alt	5
Ctrl + Shift	4
Shift + Alt	50
Ctrl + Alt	100

Clicking the side button with the right mouse button drops the list with the preset values

Scroll a Currency

Ctrl	£1
Shift	£0.10
Alt	£0.01
Ctrl + Shift	£5
Shift + Alt	£10
Ctrl + Alt	£100

Clicking the side button with the right mouse button drops the list with the preset values

Scroll a Date

Ctrl	1 day
Shift	1 week
Alt	2 weeks
Ctrl + Shift	1 month
Shift + Alt	1 year
Ctrl + Alt	4 years

Clicking the side button with the left mouse button drops the calendar

Scroll a Time

Ctrl	1 minute
Shift	5 minutes
Alt	10 minutes
Ctrl + Shift	15 minutes
Shift + Alt	30 minutes
Ctrl + Alt	1 hour

Clicking the side button with the right mouse button drops the list with the preset values

Scroll a Duration

Ctrl	15 minutes
Shift	20 minutes
Alt	30 minutes
Ctrl + Shift	1 hour
Shift + Alt	2 hours
Ctrl + Alt	4 hours

Clicking the side button with the right mouse button drops the list with the preset values