updated functionkey guide (#16)

content/docs/tutorials/azurefunctionkey.md

@@ -15,20 +15,36 @@ _This tutorial provides step-by-step instructions on how to rotate an Azure Func
 Navigate to the `Azure Function App` page and click on the relevant `Azure Function App`.
 ![](/images/azurefunction/1.png)
 
-#### 1b. Navigate to `App keys`
+#### 1b. Navigate to `App keys` or `Function keys`
 
-Under `Functions`, click on `App keys`.
+There are two types of keys:
+
+1. `App keys` can access all the functions within the function app
+2. `Function keys` can only access specific function within function app
+
+For `App keys`, under `Functions`, click on `App keys`.
 ![](/images/azurefunction/2.png)
 
-### Step 2 - Regenerate the Function key
+For `Function keys`, click the relevant function. Under `Developer` section, click `Function Keys`.
+![](/images/azurefunction/5.png)
+
+![](/images/azurefunction/6.png)
+
+### Step 2 - Regenerate the App keys or Function keys
 
-See under `Host keys (all functions)`, click `Renew key value`. If you have multiple keys, clicking the `Show value` will reveal the key's information. Ensure that you are rotating the correct key.
+For `App keys`, see under `Host keys (all functions)`, click `Renew key value`. If you have multiple keys, clicking the `Show value` will reveal the key's information. Ensure that you are rotating the correct key.
 ![](/images/azurefunction/3.png)
 Confirm the key renewal action by clicking `Renew and save`.
 
 ![](/images/azurefunction/4.png)
 
-> Note: Clicking `Renew key value` will revoke the existing key in addition to creating a new one.
+For `Function keys`, click `Renew key value`. If you have multiple keys, clicking the `Show value` will reveal the key's information. Ensure that you are rotating the correct key.
+![](/images/azurefunction/7.png)
+Confirm the key renewal action by clicking `Renew and save`.
+
+![](/images/azurefunction/8.png)
+
+> Note: Clicking `Renew and save` will revoke the existing key in addition to creating a new one.
 
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