The main toolbar in digiKam provides quick access to several tools and features, and you can tweak it to fit your particular photographic workflow. To do this, choose the Settings » Configure Toolbars command. This opens the Configure Toolbars dialog window where you can add, remove, and tweak toolbar buttons.
To add a new button to the toolbar, simply select the entry you want in the Available actions pane and drag it with the mouse to the desired position in the Current actions pane (you can also use the Arrow buttons for that). To arrange the available commands into logical groups, you can use the special –separator– entry. Don’t fancy the default icon of a specific button? Press the Change Icon button and assign the button an alternative icon. And using the Change Text button, you can modify the default button label. That’s all there is to it.