Thanks for getting back here, @bsbrister.

Allow me to chime in and share some info about this feature. Accountant tools are only available to users or accountants who use QuickBooks Online (QBO) Accountant. To access this, you can sign up for QuickBooks Online Accountant or have a client that'll invite you as there accountant.

Thus, if you're already using QuickBooks Online (QBO) Accountant and can't see the Accountant tools menu. You may open your account using a private browser. There are times that the browser is full of frequently-accessed page resources, thus causing websites, like QBO, to act weirdly. 

Here's how to use a private browser:

• Google Chrome: Hold Ctrl + Shift + N 
• Safari: Press Command + Shift + N
• Microsoft Edge or Mozilla Firefox: Hit Ctrl + Shift + P 

Once signed in, please follow the steps provided by my colleague, Angelyn_T to reclassify transactions in batch. 

If this works, go back to your regular browser and clear the cache. This will refresh the background processes of your browser to prevent problems when accessing websites.

If you get the same result while using a private browser, I recommend switching to a different browser. 

For more details about using accountant tools and features in QBO Accountant, please visit this article: Learn about accountant tools.

I’ve added this handy article that you can read through, that will help you manage accountant users in QBO: Managing accountant users. 

Feel free to post a reply below if you have more questions about the accountant tools feature or any QuickBooks-related concerns. I'm here to help however I can. Take care always.