Are you referring to vertex the same as OSNAP positions?
It appears that you are only using the "Gizmo" to adjust position of your cylinder. This is a handy tool but maybe not for what you need this time?
The Gizmo appears at the center of mass for the solid/s you have selected. If you were to select more than one of them you would see the Gizmo appear at a location between the two. Moving from center mass may or may not be your intended base location? More often, the top or bottom center might be more significant as a base location. Other instances might require a top or bottom quadrant.
The axis pointers on the Gizmo allow movement in the locked direction. You may be able to choose an OSNAP point to assist but your result might not be as expected.
It isn't clear where you intended to place your cylinder so I'm not sure what result you wanted?
The Gizmo has other cool uses too so look into that >here< when you have time!
BTW... I noticed that you had almost every possible OSNAP choice turned on. I might suggest that you narrow your running OSNAP choices to a set that accommodates most work and override with shift-right-click as necessary.
I use endpoint, midpoint, intersection, center, quadrant, and extension and leave all others unchecked. As needed I will use shift-right-click when a different OSNAP point selection is needed. Not trying to sell you on those but only offer an example.
Hope this helps,
Blaine
Blaine Young
Senior Engineering Technician, US Army
