You've upgraded to Autodesk Inventor 2015 from a previous version and find that some of the tool buttons have been hidden and stacked into grouped, fly-out menus. You've checked with a reputable attorney, and have found out that it's not legal to sneak into the Autodesk Inventor development team's office and release two dozen rabid ferrets, as payback for them once again dinking with Inventor's interface. So as "Plan B" you'd like to find some way to make the buttons more easily accessible. Can this be done?
Solution:
You can right click any tool group that has a dropdown arrow next to it and choose Ungroup. And you can also select a specific tool and choose Move to Main Panel if it's one you use often.
For further information on customizing the display of ribbon panels, visit this link:
http://help.autodesk.com/view/INVNTOR/2015/ENU/?guid=GUID-E5AB014C-D87B-4D7B-963C-00847E3DDE01