diff --git a/schemas/Indicator.yaml b/schemas/Indicator.yaml
index cbe17e2..1136f93 100644
--- a/schemas/Indicator.yaml
+++ b/schemas/Indicator.yaml
@@ -20,6 +20,14 @@ properties:
     description: Short, in dutch, plain text.
     type: string
     example: Prevalentie Diabetes
+  htmlDescription:
+    description: In dutch, HTML formatted; if present, contains details on how this value is measured (in more readable, less technical terms than `htmlDetail`.
+    type: string
+    example: Patiënten met ≥ 1 voorschrift(en) long acting beta-2 agonists (LABA) of long acting muscarine antagonists (LAMA) in de afgelopen 12 maanden
+  htmlDetail:
+    description: In dutch, HTML formatted; if present, contains specific details on how this value is measured (for example, contains information about which NHG bepaling codes are used).
+    type: string
+    example: LAMA (<code>R03BB</code> (04, 05, 06 of 07)) of LABA (<code>R03AC</code> (12, 13, 18 of 19))
   type:
     description: |-
       What kind of indicator this is.
@@ -183,6 +191,12 @@ properties:
           type: string
           example: Praktijk 2023Q3
           default: ''
+        pop:
+          description: |-
+            A number representing the total population that this indicator has calculated against; can have decimal values if this
+            indicatorset represents a group average.
+          type: number
+          example: 854.0
         segments:
           type: array
           items:
diff --git a/schemas/IndicatorSet.yaml b/schemas/IndicatorSet.yaml
index d2e2cca..8c80ad6 100644
--- a/schemas/IndicatorSet.yaml
+++ b/schemas/IndicatorSet.yaml
@@ -84,14 +84,6 @@ properties:
           description: In dutch, plain text formatted; should fit on one line.
           type: string
           example: Populatie
-        htmlDescription:
-          description: In dutch, HTML formatted; if present, contains details on how this value is measured (in more readable, less technical terms than `htmlDetail`.
-          type: string
-          example: Patiënten met ≥ 1 voorschrift(en) long acting beta-2 agonists (LABA) of long acting muscarine antagonists (LAMA) in de afgelopen 12 maanden
-        htmlDetail:
-          description: In dutch, HTML formatted; if present, contains specific details on how this value is measured (for example, contains information about which NHG bepaling codes are used).
-          type: string
-          example: LAMA (<code>R03BB</code> (04, 05, 06 of 07)) of LABA (<code>R03AC</code> (12, 13, 18 of 19))
         indicatorGroups:
           description: |-
             A chapter contains 1 or more indicator groups. An indicator group is an array of indicators which should