diff --git a/README.md b/README.md
index 1fae9dcf52..e07e3518fb 100644
--- a/README.md
+++ b/README.md
@@ -124,6 +124,59 @@ If you use it and encounter any problems, feel free to open issues on [github](h
To run diktat in **only-check** mode use command `$ mvn diktat:check@diktat`.
To run diktat in **autocorrect** mode use command `$ mvn diktat:fix@diktat`.
+Requesting a specific _Maven_ `executionId` on the command line (the trailing
+`diktat` in the above example) may be essential in these cases:
+
+ * In your `pom.xml`, you have multiple executions with different
+ configurations (e. g.: multiple rule sets):
+
+
+ ```xml
+
+
+
+ diktat-basic
+
+ diktat-analysis.yml
+
+
+
+
+ diktat-advanced
+
+ diktat-analysis-advanced.yml
+
+
+
+
+ ```
+
+ * Your YAML file with DiKTat rules has a non-default name and/or resides in a
+ non-default location:
+
+
+ ```xml
+
+
+ diktat
+
+ /non/default/rule-set-file.yml
+
+
+
+ ```
+
+
+If you omit the `executionId`:
+
+```console
+$ mvn diktat:check
+```
+
+— the plug-in will use the default configuration and search for
+`diktat-analysis.yml` file in the project directory (you can still customize the
+rule sets by editing the YAML file).
+
## Run with Gradle using diktat-gradle-plugin
Requires a gradle version no lower than 5.3.