diff --git a/src/Model/Ensembles/Ensemble.py b/src/Model/Ensembles/Ensemble.py
index c978fc2b..d24d4644 100644
--- a/src/Model/Ensembles/Ensemble.py
+++ b/src/Model/Ensembles/Ensemble.py
@@ -31,7 +31,7 @@ class Ensemble(SQLSubModel):
     _sub_classes = []
 
     def __init__(self, id: int = -1, name: str = "",
-                 function=None, range=[],
+                 function=None, range=[0., 100.],
                  data_type=None, target_data=None,
                  status=None, owner_scenario=-1):
         super(Ensemble, self).__init__(
diff --git a/src/View/Ensembles/Table.py b/src/View/Ensembles/Table.py
index 93a744e0..9cf3d7a7 100644
--- a/src/View/Ensembles/Table.py
+++ b/src/View/Ensembles/Table.py
@@ -171,6 +171,9 @@ class EnsembleTableModel(PamhyrTableModel):
             if value is None:
                 return self._trad["not_defined"]
             return value.name
+        elif self._headers[column] == "parameters":
+            value = self._lst.get(row).range
+            return str(value)
 
         return QVariant()
 
diff --git a/src/View/Ensembles/Window.py b/src/View/Ensembles/Window.py
index 1212a18e..c361bb7c 100644
--- a/src/View/Ensembles/Window.py
+++ b/src/View/Ensembles/Window.py
@@ -18,9 +18,9 @@
 
 import logging
 
-from tools import trace, timer
+from tools import trace, timer, logger_exception
 
-from View.Tools.PamhyrWindow import PamhyrWindow
+from View.Tools.PamhyrWindow import PamhyrWindow, PamhyrDialog
 
 from PyQt5.QtGui import (
     QKeySequence,
@@ -141,7 +141,7 @@ class EnsemblesWindow(PamhyrWindow):
         if self._study.is_editable():
             self.find(QAction, "action_add").triggered.connect(self.add)
             self.find(QAction, "action_del").triggered.connect(self.delete)
-            # self.find(QAction, "action_edit").triggered.connect(self.edit)
+            self.find(QAction, "action_edit").triggered.connect(self.edit)
 
         table = self.find(QTableView, f"tableView")
         table.selectionModel()\
@@ -183,16 +183,55 @@ class EnsemblesWindow(PamhyrWindow):
     def _redo(self):
         self._table.redo()
 
-    # def edit(self):
-    #     if self.sub_window_exists(
-    #         EnsemblesWindow,
-    #         data=[self._study, self.parent.conf]
-    #     ):
-    #         return
+    def edit(self):
+        rows = self.index_selected_rows()
 
-    #     strick = EnsemblesWindow(
-    #         study=self._study,
-    #         config=self.parent.conf,
-    #         parent=self
-    #     )
-    #     strick.show()
+        for row in rows:
+            try:
+                dlg = MinMaxDialog(
+                    ensemble=self._ensembles.get(row),
+                    trad=self._trad,
+                    parent=self
+                )
+                if dlg.exec():
+                    self._ensembles.get(row).range = dlg._minmax
+            except Exception as e:
+                logger_exception(e)
+                return
+
+class MinMaxDialog(PamhyrDialog):
+    _pamhyr_ui = "MinMaxDialog"
+    _pamhyr_name = "Minmax"
+
+    def __init__(self, ensemble=None,
+                 trad=None, parent=None):
+        super(MinMaxDialog, self).__init__(
+            title=trad[self._pamhyr_name],
+            trad=trad,
+            options=[],
+            parent=parent
+        )
+
+        self._ensemble = ensemble
+
+        self._init_default_values()
+
+    def _init_default_values(self):
+        self._minmax = self._ensemble.range
+        if len(self._minmax) > 0:
+            self.set_double_spin_box("doubleSpinBox_min", self._minmax[0])
+            self.set_double_spin_box("doubleSpinBox_max", self._minmax[1])
+
+    @property
+    def minmax(self):
+        return self._minmax
+
+    def accept(self):
+        self._minmax = [
+            self.get_double_spin_box("doubleSpinBox_min"),
+            self.get_double_spin_box("doubleSpinBox_max")
+        ]
+        super().accept()
+
+    def reject(self):
+        self.close()