0. {Product} - product (clion, idea, etc.)
{InstallDir} - the path to the installed product (CLion, IDEA, and so on)
1. Copy JetbrainsCrack.jar to $ {InstallDir} / bin
2. Edit the file "$ {Product} .vmoptions" (or "$ {Product} $ {64} .vmoptions") in the folder {InstallDir} / bin:
2.1 Add at the end of the file (from a new line): -javaagent: {InstallDir} /bin/JetbrainsCrack.jar
3. Run the product.
4. Enter any value in the key field.