diff --git a/doc/sphinx/plugins/group-owner/groupModify.rst b/doc/sphinx/plugins/group-owner/groupModify.rst
index f253be2..d67c01f 100644
--- a/doc/sphinx/plugins/group-owner/groupModify.rst
+++ b/doc/sphinx/plugins/group-owner/groupModify.rst
@@ -14,16 +14,28 @@ Modify the configuration of a group
 .. program:: groupModify
 
 
-.. option:: --group            GROUP                  
+.. option:: --group             GROUP                  
 
    Name of the group to modify
 
-.. option:: --mfa-required     password|totp|any|none 
+.. option:: --mfa-required      password|totp|any|none 
 
    Enforce UNIX password requirement, or TOTP requirement, or any MFA requirement, when connecting to a server of the group
 
-.. option:: --guest-ttl-limit  DURATION               
+  --idle-lock-timeout DURATION|0|-1            Overrides the global setting (`idleLockTimeout`), to the specified duration. If set to 0, disables `idleLockTimeout` for
+                                                 this group. If set to -1, remove this group override and use the global setting instead.
+  --idle-kill-timeout DURATION|0|-1            Overrides the global setting (`idleKillTimeout`), to the specified duration. If set to 0, disables `idleKillTimeout` for
+                                                 this group. If set to -1, remove this group override and use the global setting instead.
+.. option:: --guest-ttl-limit   DURATION               
 
    This group will enforce TTL setting, on guest access creation, to be set, and not to a higher value than DURATION,
 
-                                                set to zero to allow guest accesses creation without any TTL set (default)
+                                                 set to zero to allow guest accesses creation without any TTL set (default)
+
+Note that `--idle-lock-timeout` and `--idle-kill-timeout` will NOT be applied for catch-all groups (having 0.0.0.0/0 in their server list).
+
+If a server is in exactly one group an account is a member of, then its values of `--idle-lock-timeout` and `--idle-kill-timeout`, if set,
+will prevail over the global setting. The global setting can be seen with `--osh info`.
+
+Otherwise, the most restrictive setting (i.e. the one with the lower strictly positive duration) between
+all the considered groups and the global setting, will be used.