How to Customize Sounds in APPs That Doesn't Allow so in their Settings

Hello,

I am trying to customize the sound certain apps makes. Here's my dilemma. Say application X allows you to customize sounds/notifications in the specified application's settings, but application Y does not have that feature. However, if I want to change the sounds for application Y I need to change the entire system notification/sound. Is there anyway to customize/change ONLY application Y's sounds/notifications? Any help would be greatly appreciated. Thanks.

[Q&A] [D5803] [23.4.A.0.546] Lollipop 5.1.1, Pre-Rooted 2.46, XZDR 2.8.21 (Customize

Q&A for [D5803] [23.4.A.0.546] Lollipop 5.1.1, Pre-Rooted 2.46, XZDR 2.8.21 (Customized_FR)

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Customize On Screen buttons

Hey there,

I'm coming from a OPO so I got spoiled by being able to customize many options on the phone.
On the LG G4 the Square button (App Drawer) is set that if you hold it, it opens the options.
Is there any way on this phone to customize the on screen bottons?

Do I need to install a custom rom to be able to do that?

Thanks