You can choose the required stencils for the document according to the situation, import the existing stencil file, or create a new stencil.
Add a stencil to the document: Click the stencil management button
and select the required stencil from the pop-up menu.
Import existing stencil files: Click the stencil management button
and select "Import stencil" from the pop-up menu. Then select an existing stencil file, and the imported stencil will be automatically added to the current document and can also be used by other documents.