Rocket.Chat/app/discussion/server/config.ts

import { settingsRegistry } from '../../settings/server';

settingsRegistry.addGroup('Discussion', function () {
	// the channel for which discussions are created if none is explicitly chosen

	this.add('Discussion_enabled', true, {
		group: 'Discussion',
		i18nLabel: 'Enable',
		type: 'boolean',
		public: true,
	});
});

const globalQuery = {
	_id: 'RetentionPolicy_Enabled',
	value: true,
};

settingsRegistry.add('RetentionPolicy_DoNotPruneDiscussion', true, {
	group: 'RetentionPolicy',
	section: 'Global Policy',
	type: 'boolean',
	public: true,
	i18nLabel: 'RetentionPolicy_DoNotPruneDiscussion',
	i18nDescription: 'RetentionPolicy_DoNotPruneDiscussion_Description',
	enableQuery: globalQuery,
});

settingsRegistry.add('RetentionPolicy_DoNotPruneThreads', true, {
	group: 'RetentionPolicy',
	section: 'Global Policy',
	type: 'boolean',
	public: true,
	i18nLabel: 'RetentionPolicy_DoNotPruneThreads',
	i18nDescription: 'RetentionPolicy_DoNotPruneThreads_Description',
	enableQuery: globalQuery,
});