How do I add an icon to the Android Studio action toolbar?

Question

Context

In Android Studio, a developer can select actions icons such as these in the toolbar:

There are also other actions inside various drop down menus, for example, the Version Control System menu:

Issue

There are certain actions that I use frequently, i.e. the function. Since I use it so much, I would rather not have to go through the drop down menus every time to reach it.

Is there a way to add functions like these to the action toolbar of Android Studio?

Answer 1

Right click toolbar, you will see below:

Select an item of Main Toolbar and click add after...