I recently needed to access the tablebrowser in FO and found the nifty hint here:
How to Access the Table Browser
You can access the table browser using the URL string you use to get to the Dynamics 365 Finance and Operations application. At the end of the URL after “dynamics.com/” you can add the following string and replace a few values with values you need.
“?mi=SysTableBrowser&TableName=CustTable&cmp=USMF&lng=en-us&limitednav=true”