How to select a position for displaying Holograms?


I am trying to develop an application whose flow need to be like this
1.Allowing me to select a position.
2. At that position only I need to display the Hololgram object.

until I select a particular position my application shouldn’t proceed.Do we have anyway to do this task?Please let me know how can I do this.

The “Transform” of an object represents its coordinates, or position, in the world. To move an object, set its transform.