Can I apply more than one credits template to the same episode?

One episode, one credit block. Applying a second template replaces the first — you’ll be asked to confirm before it overwrites.

If you need content from two templates on one episode, the practical approach is to combine them: either create a template that covers both (a guest episode template that includes both standard credits and the sponsor note, for example), or apply one template and edit the stamped text to add whatever the other would have contributed. The stamped text is fully editable after applying — editing it doesn’t affect the template or other episodes.