how to achieve private stage view for custom team app in meeting

Thanks for the update. Okay, let’s keep the content visible in the side panel. However, I’ve noticed that a “Share” button automatically appears in the side panel when the app loads. Is there a way to disable or hide that “Share” button?
 
Here is manifest.json file for reference
{
  "$schema": "https://developer.microsoft.com/json-schemas/teams/v1.17/MicrosoftTeams.schema.json",
  "manifestVersion": "1.17",
  "version": "1.0.3",
  "id": "00000000-0000-0000-0000-000000000001",
  "developer": {
    "name": "TestApp",
    "websiteUrl": "https://www.example.com",
    "privacyUrl": "https://www.example.com/PrivacyStatement",
    "termsOfUseUrl": "https://www.example.com/TermsOfUse"
  },
  "name": {
    "short": "TestApp",
    "full": "TestApp Teams Meeting App"
  },
  "description": {
    "short": "Test app",
    "full": "A Teams  app to test"
  },
  "icons": {
    "outline": "outline.png",
    "color": "color.png"
  },
  "accentColor": "#464775",
  "configurableTabs": [],
"staticTabs": [
  {
  "entityId": "meetingSidePanel",
  "name": "Meeting Side Panel",
  "contentUrl": "https://ngrok/meetingSidePanel",
  "websiteUrl": "https://apple.com",
  "scopes": ["team","groupChat"],
  "context": ["meetingSidePanel"]
}
],
"defaultInstallScope": "meetings",
"defaultGroupCapability": {
  "meetings": "tab"
},
  "permissions": [
    "identity",
    "messageTeamMembers"
  ],
  "validDomains": [
    "*.ngrok"
  ],
  "authorization": {
    "permissions": {
      "resourceSpecific": [
        {
          "name": "MeetingStage.Write.Chat",
          "type": "Delegated"
        }
      ]
    }
  }
}