When in Doubt, Right Click in Inventor
When using Autodesk Inventor and you are doubt, just right click, because Autodesk Inventor is very right-click driven, meaning often at times you can find the important option you are looking for by just right clicking . . .
However, in Inventor, the right click context menus are specific to the objects you have selected. If no objects are selected or command is executed, the default right click menus show up.
See the right clicks below, the first one shows the default right click in Sketching environment. However, when you are in circle command, the options gets restricted to circle execution.
Default Right Click
Circle Right Click Options