A while back I posted a video on my blog that shows in detail how to create a LAMW project.
Another Lazarus user found the video and requested I post it here, so I will.
Honestly, I made this video for myself so I can remember how I did what I did. The video and sound quality aren't the best, but if you have never created a LAMW project before, it will show you everything necessary for a bare bones project.
https://wp.me/p3PlCO-GDDan