BRAHMS provides an integrated set of data management modules which are optionally implemented. The modules you see on the system menu can be selectively enabled. The system is delivered with all the available modules although BRAHMS online is separately installed.
As all BRAHMS projects store species names, the Taxa module will always be used. But beyond storing these names and facts about the names, the use of further modules depends on your project objectives. Modules can be switched on and off at any stage.
On networked systems, different users may have different requirements and access permissions. Module access is thus controlled at the user level.
The system administrator can control module access. This may be important for system security - but also, it helps to simplify the system for those who may only need a few options.