1. INTRODUCTION 2. MODEL DESCRIPTIONS 2.1 Current Model 2.2 Developed Model 3. MODEL DEVELOPMENT 3.1 Staff Scheduling System 3.2 Maintenance of the Developed Model 3.3 Knowledge Discovery System 3.4 Desired Customer Satisfaction Level 3.5 Scenarios Analysis 4. IMPLEMENTATION 4.1 OptStaff Software Development 5. CONCLUSIONS