Pre-requisites:
'Admin' permission on the project template where a workflow trigger needs to be created.
Below are the steps to create a workflow trigger for files in a project template:
Navigate to the 'Workflows' tab and select the project template.
Click the '+ Trigger' (Create Trigger) option at the top right.
Alternately, right-click the project name and select the 'Create Trigger' option.Follow the steps to create a workflow trigger for files in a project (step 3).
Click 'Create' to create a workflow trigger.