URL from button in ACP
Jamroom Developers
If you want to get items from within a template use {jrCore_list .....}
Docs: {jrCore_list}
https://www.jamroom.net/the-jamroom-network/documentation/module-developer-guide/89/jrcore-list
If its from the php side then use jrCore_db_search_items()
Docs: Datastores
https://www.jamroom.net/the-jamroom-network/documentation/module-developer-guide/1023/datastores
Docs: PHP Functions
https://www.jamroom.net/the-jamroom-network/documentation/module-developer-guide/3983/php-functions