diff --git a/app/controllers/review_mapping_controller.rb b/app/controllers/review_mapping_controller.rb
index 9934bff282e..12aafd4a8ea 100755
--- a/app/controllers/review_mapping_controller.rb
+++ b/app/controllers/review_mapping_controller.rb
@@ -1,3 +1,8 @@
+=begin
+  Implements: assigning reviewers to projects and reviewers to teams
+  Used: for automatic review mapping, peer review, self review and dynamic reviewer assignment.
+=end
+
 class ReviewMappingController < ApplicationController
   include AuthorizationHelper
 
@@ -24,7 +29,15 @@ def action_allowed?
     end
   end
 
-  def add_calibration
+=begin
+  Used: when instructor wants to do an expert peer-review and adds calibration 
+  Implements: checking by user_id, if the the instructor is a participant in the assignment.
+              If not, he is made a new participant. When the record in the ReviewReponseMap 
+              doesn't exist, it creates a new record. The record's id is then passed to the 
+              response controller to create a new response. 
+=end
+
+  def add_calibration_for_instructor
     participant = begin
                     AssignmentParticipant.where(parent_id: params[:id], user_id: session[:user].id).first
                   rescue StandardError
diff --git a/app/views/assignments/edit/_calibration.html.erb b/app/views/assignments/edit/_calibration.html.erb
index def870265ca..f33441c7cfb 100755
--- a/app/views/assignments/edit/_calibration.html.erb
+++ b/app/views/assignments/edit/_calibration.html.erb
@@ -42,7 +42,7 @@
               <% end %>
             <% else %>
               <% if session[:user].id == assignment.instructor.id %>
-                <%= link_to "Begin", {:controller => 'review_mapping', :action => 'add_calibration', :id => assignment.id, :team_id => team.id} %>
+                <%= link_to "Begin", {:controller => 'review_mapping', :action => 'add_calibration_for_instructor', :id => assignment.id, :team_id => team.id} %>
               <% end %>
             <% end %>
           </td>
diff --git a/config/routes.rb b/config/routes.rb
index cb5c410ded6..18e1fd79f93 100755
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -365,7 +365,7 @@
 
   resources :review_mapping, only: [] do
     collection do
-      get :add_calibration
+      get :add_calibration_for_instructor
       get :list_mappings
       get :unsubmit_review
       post :add_reviewer
diff --git a/spec/controllers/review_mapping_controller_spec.rb b/spec/controllers/review_mapping_controller_spec.rb
index e5166b811f4..0723b7526f8 100755
--- a/spec/controllers/review_mapping_controller_spec.rb
+++ b/spec/controllers/review_mapping_controller_spec.rb
@@ -27,7 +27,7 @@
     allow(reviewer).to receive(:get_reviewer).and_return(reviewer)
   end
 
-  describe '#add_calibration' do
+  describe '#add_calibration_for_instructor' do
     context 'when both participant and review_response_map have already existed' do
       it 'does not need to create new objects and redirects to responses#new maps' do
         allow(AssignmentParticipant).to receive_message_chain(:where, :first)
@@ -36,7 +36,8 @@
           .with(reviewed_object_id: '1', reviewer_id: 1, reviewee_id: '1', calibrate_to: true).with(no_args).and_return(review_response_map)
         request_params = { id: 1, team_id: 1 }
         user_session = { user: build(:instructor, id: 1) }
-        get :add_calibration, params: request_params, session: user_session
+        get :add_calibration_for_instructor, params: request_params, session: user_session
+        puts response
         expect(response).to redirect_to '/response/new?assignment_id=1&id=1&return=assignment_edit'
       end
     end
@@ -53,7 +54,7 @@
           .with(reviewed_object_id: '1', reviewer_id: 1, reviewee_id: '1', calibrate_to: true).and_return(review_response_map)
         request_params = { id: 1, team_id: 1 }
         user_session = { user: build(:instructor, id: 1) }
-        get :add_calibration, params: request_params, session: user_session
+        get :add_calibration_for_instructor, params: request_params, session: user_session
         expect(response).to redirect_to '/response/new?assignment_id=1&id=1&return=assignment_edit'
       end
     end