diff --git a/src/content/rules/cover-unifiers.mdx b/src/content/rules/cover-unifiers.mdx
index 1ba4482..67e78df 100644
--- a/src/content/rules/cover-unifiers.mdx
+++ b/src/content/rules/cover-unifiers.mdx
@@ -19,8 +19,11 @@ mikumod_support: "True"
 relevant_tag_id: 6751
 automatically_fixed: "False"
 complete_validation: "True"
+excerpt: You may create cover unifier song entries for out-of-scope songs if it has 5 derived song entries on VocaDB. If the artist doesn't exist on VocaDB, add it as a custom artist.
 ---
 
-If the out-of-scope original version has 5 or more derived song entries (such as remixes or covers) on VocaDB, it can be created as a [cover unifier](https://vocadb.net/T/6751) song entry.
+If an out-of-scope song has at least 5 song entries as alternate versions (derivatives such as remixes or covers) on VocaDB, it can be created as a [cover unifier](https://vocadb.net/T/6751) song entry. Sub-derivatives (e.g. cover of a remix) don't count for eligiblity.
 
-Cover unifier artists who are out-of-scope should be credited as "custom artists" (= no entry). The [Temporary artist entry](https://vocadb.net/Ar/139625) can be used to bypass the creation form.
+For artists which has an in-scope entry, you can add the artist entry on the cover unifier song entry (e.g. using "[HACHI](https://vocadb.net/Ar/49)" for "[KICK BACK](https://vocadb.net/S/454815)"). Otherwise, add it as a custom artist. Do not create new artist entries just for crediting a cover unifier.
+
+When no artist entry can be added, you can use [the "Temporary artist" entry](https://vocadb.net/Ar/139625) so that you can create the song entry.