that should say "I wouldn't exactly say..."

it's too early lol

I mean, I would exactly say you should just copy the OSSNGroups component, but it'd probably help you to look at the source. The relevant part is in ossn_com.php around lines 67-99:

//group list in newsfeed sidebar mebu
		$groups_user = ossn_get_user_groups(ossn_loggedin_user());
		if($groups_user) {
				foreach($groups_user as $group) {
						$icon = ossn_site_url("components/OssnGroups/images/group.png");
						ossn_register_sections_menu("newsfeed", array(
								"text" => $group->title,
								"name" => "groups",
								"url" => ossn_group_url($group->guid),
								"parent" => "groups",
								"icon" => $icon
						));
						unset($icon);
				}
		}
		//add gorup link in sidebar
		ossn_register_sections_menu("newsfeed", array(
				"name" => "addgroup",
				"text" => ossn_print("add:group"),
				"url" => "javascript:void(0);",
				"id" => "ossn-group-add",
				"parent" => "groups",
				"icon" => ossn_site_url("components/OssnGroups/images/add.png")
		));
		//Create link in nav to list all groups #990
		ossn_register_sections_menu("newsfeed", array(
				"name" => "allgroups",
				"text" => ossn_print("groups"),
				"url" => ossn_site_url("search?type=groups&q="),
				"parent" => "groups",
				"icon" => true,
		));