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Step 1: Integrate Slack and Telegram with My Apps
1. How to register Slack

After clicking "My Apps", search for Slack from "New Connection".

The above screen will be displayed, so please select the channel from the dropdown.
Then, press "Allow".
2. How to register Telegram
Next, search for Telegram from "New Connection".

Please enter any name for the account.
The access token will be issued when you create a new bot on Telegram.
Reference: BotFather
Once the input is complete, click the add button.
If Slack and Telegram are displayed in My Apps, registration is complete.
Next, copy the template to My Project and create a flow bot.
Copy the flow bot template from "Try it" on the banner below.