To see template stacks in Stacks 3 you need to enable the preference.
- Open a Stacks page.
- Open the sidebar info window and select the rightmost tab (plugin settings)
- On the bottom toolbar is a Prefs button. Click it to open the Stacks Preferences
- Check the
Templates checkbox in
- Now, in the Stacks Library you can click on the Templates group (it looks like for little rectangles) it is the third in the list.