1. Manage Sale Item 1.1. Create Item 1.2. Read Item 1.3. Update item 1.4. Remove Item
2. Manage Item Category 2.1. Create Item category 2.2. Update Item category 2.3. Read Item category 2.4. Remove Item category
3. Manage Customer Information 3.1. Create Customer Profile 3.2. Read Customer Profile 3.3. Update Customer Profile 3.4. Delete Customer Profile
4. Manage Sale 4.1. Make sale 4.2. Make return 4.3. Make payment