Once you've installed a template to your ManyChat account, your template(s) will save to a folder in ManyChat under Automation —> Flows.
We'll use Instagram Automations as an example.
To connect a pre-built template flow, go to Settings —> Instagram and click Edit on the entry point or trigger you want to install the template on:
Once you click Edit, you'll open up the current flow connected to the selected entry points or triggers in Flow Builder.
For Conversation Starters, click Edit, select or create a new Conversation Starter, and then click the blue icon to open up each flow up in Flow Builder:
Once you're in Flow Builder, click Replace in the upper right-hand corner, locate the template folder, and select the pre-built flow you want to connect:
Once you've connected the template flow, you can customize it as needed.