Texture position isnt in my mouse! I need help :[

Hello everyone! please I need help. when I want to modify material, right click mouse, texture, position!!

I dont have texture option! whats wrong? how can I add this option in my mouse?
Thank you in advance

Generally that happens when users have painted group or component containers instead of the faces inside. In order to get the Texture control in the Context menu, you must right click on a single face that has a texture applied to it.