Canned response can be find in Insert Response Template. To create a new template, you'll need to:
Create a response template and copy this.
Click on the Insert Response Template icon.
Click the Create a new template hyperlink
On the next page select the appropriate Brand.
For Group, select Ungrouped.
Create a Template Name for the canned response.
Paste the template in the response field. Add necessary dynamic variables in the response field.
Hit Create to save the new template.
https://www.loom.com/share/f34484109c684b5898a024a7e5157dc5B: