genymotion icon is not shown in android studio

i want to use genymotion in android studio. i have installed genymoiton and oracle virtualbox. in android studio i went to: File> settings> plugins , and installed genymotion. i should say that, previously, i have create a virtual device in genymotion. the problem is: i expect that the genymotion icon to appear in android studio but: nothing appears any help is highly appreciated...