توضیحات:

This app is designed to support bixby routines that need to set the volume levels in different values.

How to use it for bixby routines
Let's say you want during meetings not to miss any phone, but you don't want to hear annoying messages and notifications.
1. Run the app, select the Meetings preset, change accordingly the volume and Close it.
2. Go to your bixby routine and at the appropriate 'Meeting' routine set it to open this app.
3. At current time, bixby will not restore levels to normal after routine ends. You may have to turn them back manually by opening the app and tap Restore phone's levels button.
That's it. Volume levels will be as normal until the time bixby routine is set to run. When this happens volume levels will change as set by the app.

How to use it just for setting the presets.
Go to Settings and tick Use only for setting presets (Not for bixby routines).
Now, every time you open the app and select a preset, the volume levels will take immediate effect if you close it.

To keep things simple there are only 6 presets to set.
The app will always set the levels of the active preset.