Forum feature and external code

Hello everyone, I need your assistance in some app inventor issues:

  1. Does anyone know if there is a forum feature (component or extension) within app inventor and can send me guidlines on how we can add it to application that we design?
  2. Do you know if there is a possibilty to add an external code (such as google sheets) to application using the app inventor? Can you please send me an explanation?
    Many Thanks,

Did you search the FAQ ?

Not sure what you mean by forum feature, but if you mean something like this in an app, then no (but you could use a webviewer to access an online forum, or try out the many different chat options:

For Google Sheets, also check the FAQ:

or read below:

AI2 and Google Drive/Docs/Sheets
HOWTO: Query Any Google Sheet with a Web App.
UPDATED! HOWTO - Upload Any File to Google Drive !
HOWTO: Use AI2 to directly submit Google Form Data
HOWTO: Google Drive - Multiple Files Download (file by file)
HOWTO: Download Google sheet as CSV
HOWTO: Send Data to Google Sheet with Web App
HOWTO: Show Image from Google Drive
HOWTO: Upload Image to Google Drive using base64 and Google Apps Script Web App
HOWTO: Upload Image to Google Drive using base64 using Camera Image
HOWTO: Get Data from Private Google Sheet with A Google WebApp
HOWTO: Get the ID of Image after uploading using base64
HOWTO: Upload CSV or List to Google Sheet
HOWTO: AI2 - Google Sheets - Web App - Create/Read/Update/Delete
HOWTO: OCR Images and Camera Pictures with Google Docs
HOWTO: OCR pdf and image files using Google Docs OCR function
HOWTO: Upload "Any" File to Google Drive
HOWTO: Use google web app and google query to download filtered output as pdf from Google Sheet
HOWTO: Use Ai2 to Delete Images (or other files) on Google Drive
HOWTO: Take Photo, get GPS Location and Address, upload Image to Google Drive, and save Location data to spreadsheet 
HOWTO: Select a Single Row from a Spreadsheet, and howto EDIT that data

If you have a forum based on Discourse you can use its API + the web component to display data in your application (I don’t know if other forum softwares have API)