Can I Implement a Drop-Down Selector?
Currently there isn't a way to offer a multi-select dropdown, but you can use the Node Config Options tabular to get something similar.
 
To get this, use the following code.
- dropdownSelector
- Using a copy of the Stage Node
  - displayName: MultiSelect Options
attributeName: options_multiselect
type: tabular
columns:
  - type: dropdownSelector
    displayName: Option1
    attributeName: Option1
    options:
      - Create or Replace
      - Create If Not Exists
      - Create At Existing Stream
    isRequired: false
  - type: dropdownSelector
    displayName: Option2
    attributeName: Option2
    options:
      - Create or Replace
      - Create If Not Exists
      - Create At Existing Stream
    isRequired: false
  - type: dropdownSelector
    displayName: Option3
    attributeName: Option3
    options:
      - Create or Replace
      - Create If Not Exists
      - Create At Existing Stream
    isRequired: false
    
isRequired: false
capitalized: Copy of Stage
short: STG
plural: Stages
tagColor: '#2EB67D'
config:
- groupName: Options
items:
- type: materializationSelector
    default: table
    options:
    - table
    - view
    isRequired: true
- type: multisourceToggle
    enableIf: "{% if node.materializationType == 'table' %} true {% else %} false {% endif %}" 
- type: overrideSQLToggle
    enableIf: "{% if node.materializationType == 'view' %} true {% else %} false {% endif %}"
    
- displayName: Multi Source Strategy
    attributeName: insertStrategy
    type: dropdownSelector
    default: INSERT
    options:
    - "INSERT"
    - "UNION"
    - "UNION ALL"
    isRequired: true
    enableIf: "{% if node.isMultisource %} true {% else %} false {% endif %}"
- displayName: Truncate Before
    attributeName: truncateBefore
    type: toggleButton
    default: true
- displayName: Enable Tests
    attributeName: testsEnabled
    type: toggleButton
    default: true
    
- displayName: Pre-SQL
    attributeName: preSQL
    type: textBox
    syntax: sql
    isRequired: false
- displayName: Post-SQL
    attributeName: postSQL
    type: textBox
    syntax: sql
    isRequired: false
- displayName: MultiSelect Options
    attributeName: options_multiselect
    type: tabular
    columns:
    - type: dropdownSelector
        displayName: Option1
        attributeName: Option1
        options:
        - Create or Replace
        - Create If Not Exists
        - Create At Existing Stream
        isRequired: false
    - type: dropdownSelector
        displayName: Option2
        attributeName: Option2
        options:
        - Create or Replace
        - Create If Not Exists
        - Create At Existing Stream
        isRequired: false
    - type: dropdownSelector
        displayName: Option3
        attributeName: Option3
        options:
        - Create or Replace
        - Create If Not Exists
        - Create At Existing Stream
        isRequired: false
        
    isRequired: false