HSTracker runs on top of the FileMaker database engine. You can set the preferences that relate to the core database by selecting Preferences… from the HSTracker menu (FileMaker menu in multi-user version). Normally you can leave these at the default settings, but if you use many images, you could increase the memory cache size to 16 or 32MB. Most of the other options are not applicable to HSTracker.
To change HSTracker specific preferences select HSTracker Preferences… from the HSTracker menu.