Xtgems forum function
Add block - Utilities - Social - forum
You can only create one forum per site adding the block to other pages will show the same forum
There are no html parameters for the forum function
The forum function is Not available to xtscript
There is a pair of twig template files available for the forum
Create a folder in your root directory (main file browser) named _xtgem_templates
Then upload these files by "remote server option" to that folder and remove the . js extensions after upload
Twig documentation for templates