For Outlook 2016, Is there a way to create folders either under My Tasks or Other Tasks on the left side, that will pull tasks into the folder based on a category filter. I have tried to no avail. I do not want to create views for each category( i have done that and it ok) . I prefer to use folder on the left side, if possible.
Both "My Tasks" and "Other tasks" are placeholders, or "Folder groups". You can simply switch to the folder view (CTRL+6) and create a subfolder under your Tasks folder. Or, right-click any of the folders under "My tasks" and select "New folder".