1) Unzip the Tesira.zip download and save to your computer.
2) Open your Tesira layout file and locate the Processing Library. Click View > Docking Windows > Processing Library.
3) Click 'Import Catalog' from the Processing Library menu and navigate to the Tesira library files downloaded to your computer.
4) Choose 1 catalog to import to your library.
5) Drag 1 of the items from your library into your layout.
6) You can verify that the instance tags match the instance tags in the quick start guide by selecting a block in the custom block and then choose properties.

Note: Only import 1 custom library per Tesira file. Importing more than 1 library will modify the instance tags making some custom blocks unusable. If you decide to use a different catalog for the EM12 then you will need to remove the existing library from Tesira before importing the second one.