Redmine

It lacks flexibility. How can I implement a reference (table) patients? I want to create a tracker for a research lab. The tracker you want to insert the field - from the patient (Table) directory patients. Patients lot and all the time added new ones.
Ideal: to lead a project (tracker) - Patients. The project (tracker) - research to make a choice, the display fields and inserting the patient tracker. To receive one-to-many relationship. one patient - a lot of different studies. Tracker should be field with the surname, first name, date of birth and other patient data.