diff --git a/spectrum/src/frontends/slack/SlackUserManager.cpp b/spectrum/src/frontends/slack/SlackUserManager.cpp
index 6cf0f1ae6ff46741e2dc849d378685ceac2aeaa3..fc221a7773b0bad005b36b3760114cb3879c51e9 100644
--- a/spectrum/src/frontends/slack/SlackUserManager.cpp
+++ b/spectrum/src/frontends/slack/SlackUserManager.cpp
@@ -28,6 +28,7 @@
 #include "transport/Transport.h"
 #include "transport/StorageBackend.h"
 #include "transport/Logging.h"
+#include "transport/Config.h"
 
 #include <boost/algorithm/string.hpp>
 #include <boost/foreach.hpp>
@@ -133,6 +134,30 @@ bool SlackUserManager::handleAdminMessage(Swift::Message::ref message) {
 			return true;
 		}
 	}
+	else if (body.find("join_room_fields") == 0) {
+		std::string ret;
+
+		Config *cfg = m_component->getConfig();
+		ret += CONFIG_STRING_DEFAULTED(cfg, "service.join_room_nickname_label", "Nickname in 3rd-party room") + "\n";
+		std::string room_name = CONFIG_STRING_DEFAULTED(cfg, "service.join_room_room_label", "3rd-party room name");
+		if (room_name[0] == '%') {
+			room_name[0] = '#';
+		}
+		ret += room_name + "\n";
+		ret += CONFIG_STRING_DEFAULTED(cfg, "service.join_room_server_label", "3rd-party server") + "\n";
+		ret += "Slack Channel\n";
+		ret += CONFIG_STRING_DEFAULTED(cfg, "service.join_room_nickname_example", "BotNickname") + "\n";
+		room_name = CONFIG_STRING_DEFAULTED(cfg, "service.join_room_room_example", "3rd-party room name");
+		if (room_name[0] == '%') {
+			room_name[0] = '#';
+		}
+		ret += room_name + "\n";
+		ret += CONFIG_STRING_DEFAULTED(cfg, "service.join_room_server_example", "3rd.party.server.org") + "\n";
+		ret += "mychannel";
+
+		message->setBody(ret);
+		return true;
+	}
 	else if (body.find("join_room ") == 0) {
 		std::vector<std::string> args;
 		boost::split(args, body, boost::is_any_of(" "));
diff --git a/spectrum_manager/src/APIServer.cpp b/spectrum_manager/src/APIServer.cpp
index 0a25b696019c0f7f66ad1cc0652e4038430a2425..7875277322e791eda3ac1d0c325e9e64cc55e1fc 100644
--- a/spectrum_manager/src/APIServer.cpp
+++ b/spectrum_manager/src/APIServer.cpp
@@ -358,14 +358,37 @@ void APIServer::serve_instances_leave_room(Server *server, Server::session *sess
 }
 
 void APIServer::serve_instances_join_room_form(Server *server, Server::session *session, struct mg_connection *conn, struct http_message *hm) {
+	std::string uri(hm->uri.p, hm->uri.len);
+	std::string instance = uri.substr(uri.rfind("/") + 1);
+
 	// So far we support just Slack here. For XMPP, it is up to user to initiate the join room request.
 	Document json;
 	json.SetObject();
 	json.AddMember("error", 0, json.GetAllocator());
-	json.AddMember("name_label", "Nickname in 3rd-party room", json.GetAllocator());
-	json.AddMember("legacy_room_label", "3rd-party room name", json.GetAllocator());
-	json.AddMember("legacy_server_label", "3rd-party server", json.GetAllocator());
-	json.AddMember("frontend_room_label", "Slack channel", json.GetAllocator());
+
+	std::string response = server->send_command(instance, "join_room_fields");
+	std::vector<std::string> fields;
+	boost::split(fields, response, boost::is_any_of("\n"));
+
+	if (fields.size() != 8) {
+		fields.push_back("Nickname in 3rd-party room");
+		fields.push_back("3rd-party room name");
+		fields.push_back("3rd-party server");
+		fields.push_back("Slack Channel");
+		fields.push_back("BotNickname");
+		fields.push_back("room_name");
+		fields.push_back("3rd.party.server.org");
+		fields.push_back("mychannel");
+	}
+
+	json.AddMember("name_label", fields[0].c_str(), json.GetAllocator());
+	json.AddMember("legacy_room_label", fields[1].c_str(), json.GetAllocator());
+	json.AddMember("legacy_server_label", fields[2].c_str(), json.GetAllocator());
+	json.AddMember("frontend_room_label", fields[3].c_str(), json.GetAllocator());
+	json.AddMember("name_example", fields[4].c_str(), json.GetAllocator());
+	json.AddMember("legacy_room_example", fields[5].c_str(), json.GetAllocator());
+	json.AddMember("legacy_server_example", fields[6].c_str(), json.GetAllocator());
+	json.AddMember("frontend_room_example", fields[7].c_str(), json.GetAllocator());
 	send_json(conn, json);
 }
 
diff --git a/spectrum_manager/src/html/js/app.js b/spectrum_manager/src/html/js/app.js
index de74fe898eff78dcefdc6ddbc18d012f392385cc..dc601b7993b1b830588afae7fee01d31c55e2b9b 100644
--- a/spectrum_manager/src/html/js/app.js
+++ b/spectrum_manager/src/html/js/app.js
@@ -40,7 +40,7 @@ function show_instances() {
 			row += '<td>' + instance.status + '</td>'
 
 			if (command == 'register') {
-				row += '<td><a class="button_command" href="' + $.cookie("base_location") + 'instances/register.shtml?id=' + instance.id + '">' + command + '</a>' + '</td></tr>';
+				row += '<td><a href="' + $.cookie("base_location") + 'instances/register.shtml?id=' + instance.id + '">' + command + '</a>' + '</td></tr>';
 				$("#main_result  > tbody:last-child").append(row);
 			}
 			else if (command == "") {
@@ -152,10 +152,10 @@ function fill_instances_join_room_form() {
 		$("#legacy_server_desc").html(data.legacy_server_label + ":");
 		$("#frontend_room_desc").html(data.frontend_room_label + ":");
 
-		$("#name").attr("placeholder", data.name_label + ":");
-		$("#legacy_room").attr("placeholder", data.legacy_room_label + ":");
-		$("#legacy_server").attr("placeholder", data.legacy_server_label + ":");
-		$("#frontend_room").attr("placeholder", data.frontend_room_label + ":");
+		$("#name").attr("placeholder", data.name_example);
+		$("#legacy_room").attr("placeholder", data.legacy_room_example);
+		$("#legacy_server").attr("placeholder", data.legacy_server_example);
+		$("#frontend_room").attr("placeholder", data.frontend_room_example);
 	});
 }