diff --git a/app/controllers/custom_wizard/admin/wizard.rb b/app/controllers/custom_wizard/admin/wizard.rb
index 71a5623b..7a316c84 100644
--- a/app/controllers/custom_wizard/admin/wizard.rb
+++ b/app/controllers/custom_wizard/admin/wizard.rb
@@ -163,7 +163,8 @@ class CustomWizard::AdminWizardController < CustomWizard::AdminController
         mentionable_level: mapped_params,
         messageable_level: mapped_params,
         visibility_level: mapped_params,
-        members_visibility_level: mapped_params
+        members_visibility_level: mapped_params,
+        add_event: mapped_params
       ]
     )
   end
diff --git a/assets/javascripts/discourse/components/wizard-custom-action.js.es6 b/assets/javascripts/discourse/components/wizard-custom-action.js.es6
index d51a3208..48dfef48 100644
--- a/assets/javascripts/discourse/components/wizard-custom-action.js.es6
+++ b/assets/javascripts/discourse/components/wizard-custom-action.js.es6
@@ -98,4 +98,9 @@ export default Component.extend(UndoChanges, {
   actionTypes() {
     return subscriptionSelectKitContent("action", "types");
   },
+
+  @discourseComputed("fieldTypes")
+  hasEventsField(fieldTypes) {
+    return fieldTypes.map((ft) => ft.id).includes("event");
+  },
 });
diff --git a/assets/javascripts/discourse/lib/wizard-schema.js.es6 b/assets/javascripts/discourse/lib/wizard-schema.js.es6
index 020bb51c..e9622c45 100644
--- a/assets/javascripts/discourse/lib/wizard-schema.js.es6
+++ b/assets/javascripts/discourse/lib/wizard-schema.js.es6
@@ -98,6 +98,7 @@ const action = {
       custom_fields: null,
       skip_redirect: null,
       suppress_notifications: null,
+      add_event: null,
     },
     send_message: {
       title: null,
@@ -194,6 +195,7 @@ const action = {
     "messageable_level",
     "visibility_level",
     "members_visibility_level",
+    "add_event",
   ],
   required: ["id", "type"],
   dependent: {},
diff --git a/assets/javascripts/discourse/templates/admin-wizards-wizard-show.hbs b/assets/javascripts/discourse/templates/admin-wizards-wizard-show.hbs
index e7fd0865..96d773cf 100644
--- a/assets/javascripts/discourse/templates/admin-wizards-wizard-show.hbs
+++ b/assets/javascripts/discourse/templates/admin-wizards-wizard-show.hbs
@@ -176,7 +176,9 @@
       currentActionId=currentAction.id
       wizard=wizard
       apis=apis
-      wizardFields=wizardFields}}
+      removeAction="removeAction"
+      wizardFields=wizardFields
+      fieldTypes=fieldTypes}}
   {{/each}}
 
   <div class="admin-wizard-buttons">
diff --git a/assets/javascripts/discourse/templates/components/wizard-custom-action.hbs b/assets/javascripts/discourse/templates/components/wizard-custom-action.hbs
index be9c14c5..3b2222a0 100644
--- a/assets/javascripts/discourse/templates/components/wizard-custom-action.hbs
+++ b/assets/javascripts/discourse/templates/components/wizard-custom-action.hbs
@@ -160,6 +160,25 @@
         )}}
     </div>
   </div>
+
+  {{#if hasEventsField}}
+    <div class="setting full">
+      <div class="setting-label">
+        <label>{{i18n "admin.wizard.action.create_topic.add_event"}}</label>
+      </div>
+
+      <div class="setting-value">
+        {{wizard-mapper
+          inputs=action.add_event
+          property="add_event"
+          onUpdate=(action "mappedFieldUpdated")
+          options=(hash
+            wizardFieldSelection=true
+            context="action"
+          )}}
+      </div>
+    </div>
+  {{/if}}
 {{/if}}
 
 {{#if sendMessage}}
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index 9b6efeae..f140dea7 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -313,6 +313,7 @@ en:
             date: Date
             time: Time
             date_time: Date & Time
+            event: Event (Events Plugin)
 
         connector:
           and: "and"
@@ -356,6 +357,7 @@ en:
             category: "Category"
             tags: "Tags"
             visible: "Visible"
+            add_event: "Add Event (Events Plugin)"
           open_composer:
             label: "Open Composer"
           update_profile:
diff --git a/lib/custom_wizard/action.rb b/lib/custom_wizard/action.rb
index 96f56283..5917a1bc 100644
--- a/lib/custom_wizard/action.rb
+++ b/lib/custom_wizard/action.rb
@@ -43,9 +43,17 @@ class CustomWizard::Action
     @mapper ||= CustomWizard::Mapper.new(user: user, data: mapper_data)
   end
 
+  def callbacks_for(action)
+    self.class.callbacks[action] || []
+  end
+
   def create_topic
     params = basic_topic_params.merge(public_topic_params)
 
+    callbacks_for(:before_create_topic).each do |acb|
+      params = acb.call(params, @wizard, @action, @submission)
+    end
+
     if params[:title].present? && params[:raw].present?
       creator = PostCreator.new(user, params)
       post = creator.create
@@ -417,6 +425,15 @@ class CustomWizard::Action
     end
   end
 
+  def self.callbacks
+    @callbacks ||= {}
+  end
+
+  def self.register_callback(action, &block)
+    callbacks[action] ||= []
+    callbacks[action] << block
+  end
+
   private
 
   def action_category
diff --git a/lib/custom_wizard/field.rb b/lib/custom_wizard/field.rb
index 8e326b90..600f685e 100644
--- a/lib/custom_wizard/field.rb
+++ b/lib/custom_wizard/field.rb
@@ -130,17 +130,22 @@ class CustomWizard::Field
   end
 
   def self.require_assets
+    Rails.logger.warn("Custom Wizard field regisration no longer requires asset registration. Support will be removed in v2.1.0.")
+
     @require_assets ||= {}
   end
 
-  def self.register(type, plugin = nil, asset_paths = [], opts = {})
+  def self.register(type, plugin = nil, opts = {}, legacy_opts = {})
+    if opts.is_a?(Array)
+      Rails.logger.warn("Custom Wizard field regisration no longer requires asset registration. Support will be removed in v2.1.0.")
+
+      require_assets[plugin] = opts
+      opts = legacy_opts
+    end
+
     if type
       types[type.to_sym] ||= {}
       types[type.to_sym] = opts[:type_opts] if opts[:type_opts].present?
     end
-
-    if plugin && asset_paths
-      require_assets[plugin] = asset_paths
-    end
   end
 end
diff --git a/spec/components/custom_wizard/action_spec.rb b/spec/components/custom_wizard/action_spec.rb
index d13cb8ff..e5dedfa9 100644
--- a/spec/components/custom_wizard/action_spec.rb
+++ b/spec/components/custom_wizard/action_spec.rb
@@ -373,4 +373,22 @@ describe CustomWizard::Action do
       expect(log_entry.status).to eq('FAIL')
     end
   end
+
+  it 'registers callbacks' do
+    described_class.register_callback(:before_create_topic) do |params, wizard, action, submission|
+      params[:topic_opts][:custom_fields]["topic_custom_field"] = true
+      params
+    end
+
+    wizard = CustomWizard::Builder.new(@template[:id], user).build
+    action = CustomWizard::Action.new(
+      wizard: wizard,
+      action: create_topic.with_indifferent_access,
+      submission: wizard.current_submission
+    )
+    action.perform
+
+    expect(action.result.success?).to eq(true)
+    expect(Topic.find(action.result.output).custom_fields["topic_custom_field"]).to eq("t")
+  end
 end