Perhaps, Android 6.0 Marshmallow is the finest Android Update till date.Now there is an Android System UI Tuner is implemented in the setting.But you can’t find this in the settings menu like developer option.You have to manually Enable it After enabling this option you can easily Customizing Quick Settings Tiles & Status Bar Icons. Related  Guides

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Features

Customizing the Quick Settings panel Editing the Status Bar that allows you to hide or show certain icons (like Wifi, Hotspot, Bluetooth, Do not disturb etc) Displaying the embedded battery percentage In the status bar Enabling “Demo mode”

→ Manually Enable The Hidden Android 6.0 System UI Tunerseting

How to Enable The Hidden Android 6.0 System UI Tuner

Step By Step Guide

Pull down the notification center on your device Now long-press on the Settings gear icon for up to 5 seconds Now you can see a popup  “Congrats! System UI Tuner has been added to Settings.” Now you can see the System UI Tuner listed below the developer options.

Done!!!

 Steps  Enable The Hidden Android 6 0 System UI Tuner - 79