turn on nearby friend in android

Facebook told me that I must follow these steps to enable Nearby friend:

To turn Nearby Friends on or off on an iPhone or Android:
Tap More
Tap Nearby Friends
Tap Setting
Tap to turn Nearby Friends on or off

I'm using Facebook latest on Android with Samsung Core Prime and I can not do those steps cause of I dont see Nearby Friend on the screen,

Please help me for enable it!

Many thanks!

I can not screenshot the phone, but I swear I can not see the the "nearby firends" button at all. samsung told me do these steps, but it's totally no help!

To capture a screenshot, press and hold the Home Home key and the Power/Lock key simultaneously until a white border flashes around the edges of the screen. The screenshot will be copied to the clipboard and saved to the Screenshots folder in the Gallery.