On Windows 7 and 8.1 you can set the number of items to show in the jump lists.
As a result of my love to pin frequent folder/documents and websites to the jump lists I had this set at 15
Now that I have migrated to Windows 10, I am struggling to find how to increase this limit - This PC gives me around 11 pinned entries before not allowing any more, Excel and Word are 10, and Chrome seems to be stuck at 9. Its the limit in Chrome that is most annoying as I had 14 websites pinned ...
The option that was present on the Start Menu Properties for W7/8.1 is missing and I can only find a setting in the settings app to turn jump lists on or off.