Summary
You can create and add more than 50 folders in the Directory Management page of TMCM. However, the Product Directory window where managed entities and products are viewed can only display 50 folders.
Details
Apply TMCM 6.0 hot fix build 1481 on the TMCM server to allow you create more than 300 folders on the first level under the Local Folder of the TMCM console product tree.
To obtain the hot fix, contact Trend Micro Technical Support or contact your Technical Account Manager (TAM).
Check the Readme file for more details.