Starting documenting decay rules on indicator changes

Author: aHenryJard

docs/administration/decay-rules.md

@@ -36,6 +36,9 @@ You will also be able to edit your rule, change all its parameters and order, ac
 
 !!! tip "Indicator decay manager"
 
-    Decay rules are only applied, and indicators score updated, if indicator decay manager is enabled (enabled by default). 
+    Decay rules are only applied, and indicators score updated, if [indicator decay manager](../deployment/managers.md) is enabled (enabled by default).
 
-    [Please read the dedicated page to have all information](../deployment/managers.md#indicator-decay-manager)
+## Related reading:
+
+- [Indicator decay manager](../deployment/managers.md)
+- [Decay rules configuration](../administration/decay-rules.md)

docs/deployment/managers.md

@@ -77,7 +77,9 @@ More information can be found [here](../administration/file-indexing.md).
 
 The indicator decay manager allows to update indicators score automatically based on configured decay rules.
 
-More information can be found [here](../administration/decay-rules.md).
+More information can be found:
+- [Decay rule configuration](../administration/decay-rules.md).
+- [Indicator lifecycle](../usage/indicators-lifecycle.md).
 
 ## Trash manager
 

docs/usage/indicators-lifecycle.md

@@ -34,6 +34,24 @@ Right next to the indicator score, there is a button `Lifecycle` which enables t
 
 ![Indicator lifecycle](./assets/indicators-lifecycle-example-dialog.png)
 
+## How the decay can be impacted indicator updates
+
+The decay rule is a mathematical computation based on:
+- valid until
+- indicator score
+- being revoked or not
+
+### Changing valid until date
+
+### Changing score
+
+### Changing revoke state
+
 ## Conclusion
 
 Understanding how OpenCTI calculates validity periods and scores is essential for effective threat intelligence analysis. These rules ensure that your indicators are accurate and up-to-date, providing a reliable foundation for threat intelligence data.
+
+## Related reading:
+
+- [Indicator decay manager](../deployment/managers.md)
+- [Decay rules configuration](../administration/decay-rules.md)