Windows 11 Opening All Instances of Same Application (via taskbar or any other way)

I wanted to reach out to enthusiasts and developers here, I was hoping there was a way to activate all instances/windows of a program upon the activation that program. For example, if I use alt + tab to activate a notepad document, then all other notepad documents would appear with it. 

Right now, I'm toggling through each instance of a window (using a 3rd party program "easy window switcher") *every single time I activate a program* and then again when I go back to the previous program.