diff --git a/README.md b/README.md
index 21727c8..1f7931e 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,12 @@ services:
       # Auto-gender selection/config -- This is used to create the calculations such as BMI, Water/Bone Mass etc...
       # Up to 3 users possible as long as weights do not overlap!
 
+
+      # Here is the logic used to assign a measured weight to a user:
+      # if [measured value] is greater than USER1_GT, assign it to USER1
+      # else if [measured value] is less than USER2_LT, assign it to USER2
+      # else assign it to USER3 (e.g. USER2_LT > [measured value] > USER1_GT)
+
     - USER1_GT=70                   # If the weight is greater than this number, we'll assume that we're weighing User #1
     - USER1_SEX=male                # male / female
     - USER1_NAME=Jo                 # Name of the user