Firefox 109 comes with the Extensions button in the Navigation Toolbar as the new way to manage your extensions. The panel that opens if you click the Extensions button (puzzle piece icon) serves as overflow area for extensions you install. The legacy chevron (>>) overflow area still exists but is only used for built-in toolbar buttons as found in the Customize page.

In the Extensions button panel, you can click the gear icon next to an extension or use the right-click context menu to pin the extension to the toolbar (Pin to Toolbar). To (re)move the extension from the toolbar back to the Extensions button panel, you can use "Unpin from Toolbar" in the right-click context menu.

More Information:

• https://support.mozilla.org/en-US/kb/extensions-button

Thank you for your prompt reply. I had previously tried what you suggested in your answer, however, it seems that this particular extension does not offer the "pin to tool bar" option

That likely means that the extension doesn't come with a toolbar button, but uses a different way. Do you mean this extension or another extension?

• https://addons.mozilla.org/en-US/firefox/addon/disableautoplay/

Plugin adds a red frame on the video, to start the video just click on the frame. It's kind of a "Click to Play".

Nevermind I found the "Pin to Toolbar" option. Although I must say, "Restore Defaults" only succeeded in increasing my blood pressure.

Cor-el, I'm serious when I say this, I'm not trying to troll or deceive you. But your advice sucks and only makes things worse for others. Please stop, for the sake of the greater good.

Note that there is Undo available for Restore Defaults, so there is no need for panic.