If you want to keep using the Sandboxed solutions, follow the steps below.

This Installation process is valid for SharePoint On-Premises and SharePoint Online.

  1. Open the settings menu and click on Site settings;

    sitesettings.png

  2. Under Web Designer Galleries, click on Solutions;

    You will need to activate the Publishing features for the Solutions link to appear on the list. If you don’t have permissions, ask an Admin for assistance.

  3. Click on Upload Solution and choose the file BTLinks_x.x.x.x.wsp, included in the web part package;

    wsplinks.png

  4. Click OK;

  5. Click on Activate and wait for the page to refresh.

Web Part installed! ✅

Done! To complete the setup process the only thing left to do now is to configure the web part.

Next - Configuration