docs: updated multimodal notebook instructions (#1745)

Author: GarrettWu

notebooks/multimodal/multimodal_dataframe.ipynb

@@ -72,6 +72,22 @@
         "### Setup"
       ]
     },
+    {
+      "cell_type": "markdown",
+      "metadata": {},
+      "source": [
+        "Install the latest bigframes package if bigframes version < 2.4.0"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {},
+      "outputs": [],
+      "source": [
+        "# !pip install bigframes --upgrade"
+      ]
+    },
     {
       "cell_type": "code",
       "execution_count": null,
@@ -84,10 +100,13 @@
       },
       "outputs": [],
       "source": [
-        "PROJECT = \"bigframes-dev\" # replace with your project, project needs to be allowlisted go/bq-multimodal-allowlist (internal)\n",
-        "# User must have https://cloud.google.com/bigquery/docs/use-bigquery-dataframes#permissions to use bigframes, BQ connection admin/user to create/use connections, BQ ObjRef permissions for ObjectRef and BQ routines permissions for using transform functions.\n",
-        "# Or simply has BQ Admin role for all.\n",
-        "OUTPUT_BUCKET = \"bigframes_blob_test\" # replace with your GCS bucket. The connection (or bigframes-default-connection of the project) must have read/write permission to the bucket.\n",
+        "PROJECT = \"bigframes-dev\" # replace with your project. \n",
+        "# Refer to https://cloud.google.com/bigquery/docs/multimodal-data-dataframes-tutorial#required_roles for your required permissions\n",
+        "\n",
+        "OUTPUT_BUCKET = \"bigframes_blob_test\" # replace with your GCS bucket. \n",
+        "# The connection (or bigframes-default-connection of the project) must have read/write permission to the bucket. \n",
+        "# Refer to https://cloud.google.com/bigquery/docs/multimodal-data-dataframes-tutorial#grant-permissions for setting up connection service account permissions.\n",
+        "# In this Notebook it uses bigframes-default-connection by default. You can also bring in your own connections in each method.\n",
         "\n",
         "import bigframes\n",
         "# Setup project\n",
@@ -414,13 +433,6 @@
         "chunked = df_pdf[\"chunked\"].explode()\n",
         "chunked"
       ]
-    },
-    {
-      "cell_type": "code",
-      "execution_count": null,
-      "metadata": {},
-      "outputs": [],
-      "source": []
     }
   ],
   "metadata": {