Hi @alashwellZYSS6,
I see that you are visiting as a new member to the AutoCAD Mechanical forum. Welcome to the Autodesk Community!
The Toolbars option is not included in AutoCAD Mechanical. It may have been included in the 2014 release, but was removed when AutoCAD Mechanical added the Ribbon.
You can access toolbars from the -TOOLBARS command, type in the specific tool bars, or All. The available toolbars can be found in the CUI here:
If you are not seeing this, I would recommend checking that you have the latest updates installed. If you suspect a corrupted install, you could try reset to defaults.
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All the best,
Cheryl Buck
Technical Support Specialist

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