Updated Batch Calling Documentation (#423)

* Update call-outbound.mdx

added section for sample CSV batch calling along with path for sample file download

* Update call-outbound.mdx

documentation update for batch calling

Author: kyle-vapi

fern/calls/call-outbound.mdx

@@ -78,10 +78,35 @@ Use both `customers` and `schedulePlan` together to schedule batched calls.
 }
 ```
 
+## Uploading Your CSV File to the Dashboard
+
+Use the [`example template`](/assets/batch-sample.csv) to get started.
+
+* The only required columns are **`phone`** and **`name`**.
+* Any other columns (like `appointment_time`, `location`, etc.) can be used as dynamic variables in your assistant’s script.
+
+## How to Launch a Batch Call
+
+1. Go to **Phone Numbers** in the sidebar.
+2. Select the **number** you want to call from.
+3. Scroll to **Outbound Settings** → click **Call Many Numbers**.
+4. **Upload your CSV file** (drag & drop or click to upload).
+5. Select your **Assistant**, **Squad**, or **Workflow**.
+6. Click **Make Calls** to start now, or **Schedule Calls** to set a future date/time.
+
+>    *Calls will run concurrently — not sequentially.*
+
+## Tips for Clean Data
+
+* Use **UTF-8 encoding** when saving your CSV.
+* Avoid blank rows or duplicated headers.
+* Double-check that your column names match the variables used in your assistant.
+
+
 Note: Vapi free numbers have limited number of outbound calls per day. Import a number from Twilio, Vonage, or Telnyx to scale without limits.
 
 <Warning>
   It is a violation of FCC law to dial phone numbers without consent in an
   automated manner. See [Telemarketing Sales
   Rule](/glossary#telemarketing-sales-rule) to learn more.
-</Warning>
+</Warning>