diff --git a/src/actions/sponsor-cart-actions.js b/src/actions/sponsor-cart-actions.js
index cbbf74a5a..3d5cf0cd4 100644
--- a/src/actions/sponsor-cart-actions.js
+++ b/src/actions/sponsor-cart-actions.js
@@ -16,6 +16,7 @@ import {
   createAction,
   getRequest,
   deleteRequest,
+  putRequest,
   startLoading,
   stopLoading
 } from "openstack-uicore-foundation/lib/utils/actions";
@@ -28,6 +29,7 @@ import { ERROR_CODE_404 } from "../utils/constants";
 export const REQUEST_SPONSOR_CART = "REQUEST_SPONSOR_CART";
 export const RECEIVE_SPONSOR_CART = "RECEIVE_SPONSOR_CART";
 export const SPONSOR_CART_FORM_DELETED = "SPONSOR_CART_FORM_DELETED";
+export const SPONSOR_CART_FORM_LOCKED = "SPONSOR_CART_FORM_LOCKED";
 
 const customErrorHandler = (err, res) => (dispatch, state) => {
   const code = err.status;
@@ -82,35 +84,82 @@ export const getSponsorCart =
       });
   };
 
+export const deleteSponsorCartForm = (formId) => async (dispatch, getState) => {
+  const { currentSummitState, currentSponsorState } = getState();
+  const { currentSummit } = currentSummitState;
+  const {
+    entity: { id: sponsorId }
+  } = currentSponsorState;
+  const accessToken = await getAccessTokenSafely();
+  const params = { access_token: accessToken };
 
-export const deleteSponsorCartForm =
-  (formId) => async (dispatch, getState) => {
-    const { currentSummitState, currentSponsorState } = getState();
-    const { currentSummit } = currentSummitState;
-    const {
-      entity: { id: sponsorId }
-    } = currentSponsorState;
-    const accessToken = await getAccessTokenSafely();
-    const params = { access_token: accessToken };
+  dispatch(startLoading());
 
-    dispatch(startLoading());
+  return deleteRequest(
+    null,
+    createAction(SPONSOR_CART_FORM_DELETED)({ formId }),
+    `${window.PURCHASES_API_URL}/api/v1/summits/${currentSummit.id}/sponsors/${sponsorId}/carts/current/forms/${formId}`,
+    null,
+    snackbarErrorHandler
+  )(params)(dispatch)
+    .then(() => {
+      getSponsorCart()(dispatch, getState);
+      dispatch(
+        snackbarSuccessHandler({
+          title: T.translate("general.success"),
+          html: T.translate("sponsor_forms.form_delete_success")
+        })
+      );
+    })
+    .finally(() => {
+      dispatch(stopLoading());
+    });
+};
 
-    return deleteRequest(
-      null,
-      createAction(SPONSOR_CART_FORM_DELETED)({ formId }),
-      `${window.PURCHASES_API_URL}/api/v1/summits/${currentSummit.id}/sponsors/${sponsorId}/sponsor-forms/${formId}`,
-      null,
-      snackbarErrorHandler
-    )(params)(dispatch)
-      .then(() => {
-        dispatch(
-          snackbarSuccessHandler({
-            title: T.translate("general.success"),
-            html: T.translate("sponsor_forms.form_delete_success")
-          })
-        );
-      })
-      .finally(() => {
-        dispatch(stopLoading());
-      });
-  };
\ No newline at end of file
+export const lockSponsorCartForm = (formId) => async (dispatch, getState) => {
+  const { currentSummitState, currentSponsorState } = getState();
+  const { currentSummit } = currentSummitState;
+  const { entity: sponsor } = currentSponsorState;
+
+  const accessToken = await getAccessTokenSafely();
+
+  const params = {
+    access_token: accessToken
+  };
+
+  dispatch(startLoading());
+
+  putRequest(
+    null,
+    createAction(SPONSOR_CART_FORM_LOCKED)({ formId, locked: true }),
+    `${window.SPONSOR_USERS_API_URL}/api/v1/shows/${currentSummit.id}/sponsors/${sponsor.id}/carts/current/forms/${formId}/lock`,
+    {},
+    snackbarErrorHandler
+  )(params)(dispatch)
+    .catch(console.log) // need to catch promise reject
+    .finally(() => {
+      dispatch(stopLoading());
+    });
+};
+
+export const unlockSponsorCartForm = (formId) => async (dispatch, getState) => {
+  const { currentSummitState, currentSponsorState } = getState();
+  const { currentSummit } = currentSummitState;
+  const { entity: sponsor } = currentSponsorState;
+  const accessToken = await getAccessTokenSafely();
+  const params = { access_token: accessToken };
+
+  dispatch(startLoading());
+
+  return deleteRequest(
+    null,
+    createAction(SPONSOR_CART_FORM_LOCKED)({ formId, locked: false }),
+    `${window.SPONSOR_USERS_API_URL}/api/v1/shows/${currentSummit.id}/sponsors/${sponsor.id}/carts/current/forms/${formId}/lock`,
+    null,
+    snackbarErrorHandler
+  )(params)(dispatch)
+    .catch(console.log) // need to catch promise reject
+    .finally(() => {
+      dispatch(stopLoading());
+    });
+};
diff --git a/src/pages/sponsors/sponsor-cart-tab/index.js b/src/pages/sponsors/sponsor-cart-tab/index.js
index 4d1d9b564..c41d0f587 100644
--- a/src/pages/sponsors/sponsor-cart-tab/index.js
+++ b/src/pages/sponsors/sponsor-cart-tab/index.js
@@ -27,7 +27,9 @@ import LockClosedIcon from "@mui/icons-material/Lock";
 import AddIcon from "@mui/icons-material/Add";
 import {
   deleteSponsorCartForm,
-  getSponsorCart
+  getSponsorCart,
+  lockSponsorCartForm,
+  unlockSponsorCartForm
 } from "../../../actions/sponsor-cart-actions";
 import SearchInput from "../../../components/mui/search-input";
 import { TotalRow } from "../../../components/mui/table/extra-rows";
@@ -39,7 +41,9 @@ const SponsorCartTab = ({
   sponsor,
   summitId,
   getSponsorCart,
-  deleteSponsorCartForm
+  deleteSponsorCartForm,
+  lockSponsorCartForm,
+  unlockSponsorCartForm
 }) => {
   const [openPopup, setOpenPopup] = useState(null);
   const [formEdit, setFormEdit] = useState(null);
@@ -64,8 +68,12 @@ const SponsorCartTab = ({
     deleteSponsorCartForm(itemId);
   };
 
-  const handleLock = (item) => {
-    console.log("LOCK : ", item);
+  const handleLock = (form) => {
+    if (form.is_locked) {
+      unlockSponsorCartForm(form.form_id);
+    } else {
+      lockSponsorCartForm(form.form_id);
+    }
   };
 
   const handlePayCreditCard = () => {
@@ -227,5 +235,7 @@ const mapStateToProps = ({ sponsorPageCartListState }) => ({
 
 export default connect(mapStateToProps, {
   getSponsorCart,
-  deleteSponsorCartForm
+  deleteSponsorCartForm,
+  lockSponsorCartForm,
+  unlockSponsorCartForm
 })(SponsorCartTab);
diff --git a/src/reducers/sponsors/sponsor-page-cart-list-reducer.js b/src/reducers/sponsors/sponsor-page-cart-list-reducer.js
index 93c012b85..7d12f3429 100644
--- a/src/reducers/sponsors/sponsor-page-cart-list-reducer.js
+++ b/src/reducers/sponsors/sponsor-page-cart-list-reducer.js
@@ -17,7 +17,8 @@ import { SET_CURRENT_SUMMIT } from "../../actions/summit-actions";
 import {
   REQUEST_SPONSOR_CART,
   RECEIVE_SPONSOR_CART,
-  SPONSOR_CART_FORM_DELETED
+  SPONSOR_CART_FORM_DELETED,
+  SPONSOR_CART_FORM_LOCKED
 } from "../../actions/sponsor-cart-actions";
 
 const DEFAULT_STATE = {
@@ -70,6 +71,24 @@ const sponsorPageCartListReducer = (state = DEFAULT_STATE, action) => {
         }
       };
     }
+    case SPONSOR_CART_FORM_LOCKED: {
+      const { formId, locked } = payload;
+
+      const forms = state.cart.forms.map((form) => {
+        if (form.form_id === formId) {
+          return {...form, locked};
+        }
+        return form;
+      });
+
+      return {
+        ...state,
+        cart: {
+          ...state.cart,
+          forms
+        }
+      };
+    }
     default:
       return state;
   }