It took me 2 days to figure this out and I post it here maybe someone would benefit from it.
If you want to add multiple notifies in configuration.yaml you should list them under the same
“notify:” category as listed below, and note that the first notify settings start with “- platform” and the second notify setting also starts where the second “- platform” is, without spaces between them.
# Notifier
notify:
- platform: telegram #1st notify starts here
name: "Telegram Notifier"
chat_id: -420156xxxx #1st notify ends here
- platform: rest #2nd notify starts here
name: "Telegram Caller"
resource: https://api.callmebot.com/start.php
data:
source: HA
user: "@xxxxxxx"
lang: en-GB-Standard-B #2nd notify ends here