I can see the benefit of being able to accomplish different tasks in Fixed Asset Manager (FAM) using the multi-user access mode in QuickBooks Desktop (QBDT), @MichelleSCR. That's why I'm here to share further details about this.

There are certain business processes/workflow activities that can only be performed using the single-user mode. This is because it's safer to let only one user modify or add details to your company's item lists. This way, you can keep your data secure, track any possible errors easily, and avoid duplicates.  

You can learn more about the tasks that can be performed in single or multi-user mode through this article: Features available and tasks you can perform in single or multi-user mode. It includes topics about company file operations, managing lists, and the importing/exporting process to name a few.

Additionally, it's easy to track your fixed assets in QBDT using the FAM feature in QBDT. To execute the different key tasks, you can refer to this article: Use Fixed Asset Manager in QuickBooks Desktop. It includes steps about assigning an account to multiple assets and changing/adding depreciation method/setting to name a few.

Please know that you're always welcome to comment below if you have other concerns or follow-up inquiries about managing your fixed assets in QBDT. I'm just around to help. Take care.