Create Telegram Bot and get Bot's token and the Group's chat id
Create a Telegram group where Bot and you are members, and all other people that you want to send alarms to.
(You will create and make the Bot join the group in the next steps)
Talk to BotFather, goto @BotFather in Telegram or goto:
https://telegram.me/botfather
Create a new Bot
/newbot
Enter name of your Bot
FirstWarningBot
Enter username for Bot
FirstWarningBot
Then you will see a token, something like this:
110201543:AAHdqTcvCH1vGWJxfSeofSAs0K5PALDsaw
Copy token
In Telegram write
/setjoingroups
Select the Bot that should join the Alarm group
Click the Bot
Click Enable
Add the Bot to the group, the same procedure as when adding a normal person to a group.
You and the Bot should now be members of the Alarm group.
Now you need to get the ChatID for the group
If you forgot your bot token, go to Botfather in Telegram and write:
/mybots
Click the correct bot and then click API Token
Then go to url: https://api.telegram.org/botYOUR_BOT_TOKEN_THAT_YOU_COPIED_ABOVE/getUpdates
Replace YOUR_BOT_TOKEN_THAT_YOU COPIED_ABOVE with your bot token.
Remember to write bot just before your token in the url
Look for "chat":{"id":-yyyyyyyyy,
-yyyyyyyyy is the groups chatid(it should have a negative sign)
If chatid is not shown when going to above url, remove bot from group and then add bot again.
Goto https://api.telegram.org/botYOUR_BOT_TOKEN_THAT_YOU_COPIED_ABOVE/getUpdates
Now you have both the Bot's token and Group's chatid, input them on the "Add/Edit display page"
Write "bot" before your token in the "Telegram token" box, example: bot110201543:AAHdqTcvCH1vGWJxfSeofSAs0K5PALDsaw