I am relatively new to Omni Focus. My process is to enter tasks into the Inbox as they come to me. I would like to create a custom perspective that shows all tasks that are not assigned to a project. Is this possible? I cannot figure it out.
You could go to Settings: Organization, and there set ”Clean up inbox items which have” to ”A Project”. Then your Inbox itself will act as a perspective like that, at least after the Clean up-command (in the Organize menu).