update README

README.md

@@ -72,14 +72,18 @@ The numeric ID before the pipe is the API ID from VPSAG/EVPS.
 
 #### Finding the IDs
 
-The easiest way to find the IDs is through WHMCS itself:
+The module displays IDs directly in the dropdowns (format: `ID | Name`):
 
 1. Go to **Setup > Products/Services > Products/Services**
 2. Edit any product using the ArkhostVPSAG module
 3. Go to the **Module Settings** tab
-4. The **Plan** and **Operating System** dropdowns show all available options with their IDs
+4. The **Plan** and **Operating System** dropdowns show: `{id} | {name}`
 
-The dropdown values are the IDs you need. Simply use those same IDs when creating Configurable Options.
+Use those IDs when creating Configurable Options.
+
+**API terminology:**
+- `planid` = Package/Plan ID from VPSAG API
+- `osid` = Operating System ID from VPSAG API
 
 **Note:** OS availability varies by plan - you must select a Plan first before the OS dropdown populates.