Update setup keys doc

src/pages/how-to/register-machines-using-setup-keys.mdx

@@ -11,33 +11,38 @@ This makes it possible to run automated deployments with infrastructure-as-code
 sudo netbird up --setup-key <SETUP KEY>
 ```
 
-## Types of Setup Keys
+## Types of setup seys
 
 There are 2 types of setup keys:
 * **One-off key**. This type of key can be used only once to authenticate a machine.
 * **Reusable key**. This type of key can be used multiple times to authenticate machines.
 
-## Using Setup Keys
+## Using setup keys
 
-Setup keys are available in the NetBird Management dashboard under the Setup Keys tab [https://app.netbird.io/setup-keys](https://app.netbird.io/setup-keys).
-
-By default, we generate 2 setup keys right after account creation. You can easily add new or revoke keys.
+Setup keys are available in the NetBird Management Dashboard under the `Setup Keys` tab [https://app.netbird.io/setup-keys](https://app.netbird.io/setup-keys).
+ You can easily add new or revoke keys.
 
 <p>
- <img src="/docs-static/img/architecture/setup-keys.png" alt="high-level-dia" className="imagewrapper"/>
+ <img src="/docs-static/img/how-to-guides/setup-keys.png" alt="high-level-dia" className="imagewrapper"/>
 </p>
 
 <Note>
- When revoking a key, all machines authenticated with this key will remain connected in the network. The same logic applies when the key expires.
+ When revoking a key, all machines authenticated with this key will remain connected to the network. The same logic applies when the key expires.
 </Note>
-### Expiration
 
-Setup keys are set to expire after 30 days. When expired, the setup key can't be used anymore.
+## Expiration
+
+You can set expiration when creating a key. When expired, the setup key can't be used anymore.
+
+## Usage limit
+
+By default, every reusable key has unlimited usage.
+We recommend limiting the number of times the key can be used, e.g., set it to 30 if you need to enroll only 30 machines.
 
 ## Peer Auto-grouping
 
 <p>
- <img src="/docs-static/img/architecture/peer-auto-tagging-setupkey.gif" alt="high-level-dia" width="800" className="imagewrapper"/>
+ <img src="/docs-static/img/architecture/peer-auto-tagging-setupkey.gif" alt="high-level-dia" className="imagewrapper"/>
 </p>
 
 NetBird offers a powerful [access control feature](/how-to/manage-network-access) that allows easy access management of your resources.
@@ -59,3 +64,18 @@ Then use this key to enroll new machine.
  Auto-assign groups will apply only to newly registered machines.
 </Note>
 
+## Create setup key
+
+Click the `Add Key` button in the `Setup Keys'.
+In the opened popup, give your new key an easily identifiable name, choose type, set usage limit, and assign auto groups.
+The defaults should be suitable for most of the cases. We recommend using one-off keys for security reasons.
+
+<p>
+ <img src="/docs-static/img/how-to-guides/add-setup-key.png" alt="high-level-dia" className="imagewrapper"/>
+</p>
+
+After your key has been successfully created, copy and store it in a secure location.
+
+<p>
+ <img src="/docs-static/img/how-to-guides/setup-key-created.png" alt="high-level-dia" className="imagewrapper"/>
+</p>