organizer
//ˈɔːrɡənaɪzər//
Noun
organizerSingular
organizersPlural
1
A person who arranges or coordinates events, activities, or groups of people.
She is the organizer of the charity event.
2
A container, device, or system used to arrange and store items in an orderly manner.
I bought a desk organizer to keep my pens and papers tidy.
3
A book or electronic tool, such as a planner or diary, used to schedule appointments and manage time.
I keep all my appointments in my organizer.