diff --git a/geocoder/admin0/README.md b/geocoder/admin0/README.md
index ff8d6af..7f69b50 100644
--- a/geocoder/admin0/README.md
+++ b/geocoder/admin0/README.md
@@ -31,10 +31,21 @@ sql/subdivide_polygons.sql
 
 ## Admin0_synonyms
 
-Documentation for the creation of the geocoder synonym tables.
+In order to add new entries manually for admin0, table [admin0_synonym_additions](https://geocoding.cartodb.com/tables/admin0_synonym_additions) has been created.
 
-For use with the admin0_geocoder.
+The table contains the following columns to be populated:
+1. **adm0_a3** : ISO code for the region. Used to get the unique geometry for the region in terms of the synonym.
+2. **name**: Actually, the synonym you want to include for a specific region (identified ad adm0_a3).
+3. notes: Extra information as the source of the data. Use: 'data source: X'.
+4. rank: Use '9' for manually curated additions.
 
+The following query can be used:
+
+````
+INSERT INTO admin0_synonym_additions (adm0_a3, name, notes, rank) VALUES ($iso3_code, $synonym, $notes, 9)
+````
+
+**Note:** If you need a complete dataset to be included, please create a new issue in order to add it to the build script.
 
 ### Ranks