Currently, options are either in HKCU (non-portable) or in an ini file (portable). If you install 7+ Taskbar Tweaker in Program Files (non-portable), each user still has his own settings.

If settings are in HKLM, 7+ Taskbar Tweaker has to be running as administrator to be able to change them.

Because I didn't bother. Most users use the default path which doesn't require elevation.

By the way, if you uninstall from the control panel (or the new Apps and Features), the uninstaller is launched as administrator by Windows.

Currently, the tweaker doesn't provide such options.

Unfortunately, I don't know how to make it work. I can reproduce the problem, but what happens is that the taskbar doesn't receive any mouse wheel events at all. You can see it with the Microsoft Spy++ tool. The corresponding message is WM_MOUSEWHEEL.

Thank you for the suggestion. It was already suggested in the following topic, closing as a duplicate:

https://tweaker.userecho.com/topics/657-using-mouse-wheel-to-change-virtual-desktops-win-10

I've added the sndvol_step advanced option to the newly added beta version, v5.10.0.2. Please try it. Refer to the help file for details.

Thanks for the suggestion. Such a topic already exists:

https://tweaker.userecho.com/topics/1017-option-to-change-volume-step

Closing this as a duplicate.

For some reason, the spam filter marked this topic, and I noticed it only now by accident.

There's also the following suggestion which is similar:

https://tweaker.userecho.com/topics/273-possibility-to-always-expand-groups-with-more-than-1-item-and-show-their-labels

Last time I checked, overriding system global hotkeys was only possible if they're disabled for system use in the system registry. See this article: Disable Global Hot Keys

See also my answer here: Switching between open programs using keyboard

I'm not sure whether that still works in the latest Windows 10 versions. But even if it is, the tweaker doesn't have a keyboard action to switch to a window according to its placement on the taskbar.