# Create user assignment

Creates a user assignment.

Typical parameters:

- assignable_id
- starts_at
- ends_at
- allocation_mode (percent, hours_per_day, fixed) and a value for the respective mode-named property (that is, a property named percent, hours_per_day, or fixed_hours)

Endpoint: POST /users/{user_id}/assignments
Version: v1
Security: AuthToken

## Header parameters:

  - `Content-Type` (string, required)
    Enum: "application/json"

## Path parameters:

  - `user_id` (integer, required)
    Unique identifier for the resource instance.
    Example: 1234567

## Request fields (application/json):

  - `assignable_id` (integer, required)
    The ID of the project, phase, or leave type to which the the assignment applies.
    Example: 1234