# Choose who sees the messenger

Pick who can use the messenger, how people open it and when they can start a conversation.

You decide who sees the messenger and how it shows up. All of this lives in **Messenger settings** in the sidebar.

### Who sees it

On the **Widget** tab, under **Content**, choose whether the messenger appears for **Visitors**, **Signed-in users** or both. The **Mobile SDKs** tab has the same choice for your apps.

### Use your own button

Turn off **Show the launcher** to hide the default button. Then add a **Custom launcher selector**, like `#help-button`, and any element that matches it opens the messenger. Elements with a `data-karadesk-launcher` attribute work too.

### Where the launcher sits

Under **Appearance**, put the launcher on the left or right and adjust its spacing from the side and bottom of the page. On phones, the messenger opens full screen.

### Conversation rules

The **Conversations** tab has separate rules for visitors and signed-in users. You can choose whether they can:

- Start new conversations at all.
- Have more than one open conversation at a time.
- Start a conversation without searching your help center first.
- Reply to conversations that were closed more than a few days ago.

Click save when you're done.

To choose which websites can load the messenger, see [Add the messenger to your website](/articles/7).