You can create a block directly in a template or in the library.
To create a block in the library:
Open the Blocks section.
Click button in the lower right and select Block.
The New block window opens. Enter the name of the block and click the Create button.
The block editing page opens. Add text to the new block, including data entry fields. Working with a block is similar to working with a template. All changes is saved automatically.
The block is created. Now this piece of text, including the input fields, can be used in any documents by selecting a block from the library in the sidebar of template editor (see details: см. подробнее: Add block to template).