Use this when you want to add a reusable section (intro, body, signature, etc.) to a template.
Steps
1. Go to Templates and open or create a template.
2. Click Browse All Blocks → Create New Block.
3. Name the block. Optional to add a category.
4. Add text, merge fields, formatting, images, or tables.
5. Click Save — your new block is now reusable across all templates.