diff --git a/apps/map/models.py b/apps/map/models.py
index 8c3ee1f..5292615 100644
--- a/apps/map/models.py
+++ b/apps/map/models.py
@@ -50,6 +50,7 @@ class CaseStudy(models.Model):
     LOCATION_CONTEXT_CHOICES = (
         ('RUR', _('Rural')),
         ('URB', _('Urban')),
+        ('MIX', _('Mixed')),
     )
 
     TYPE_OF_ECOSYSTEM_CHOICES = (
@@ -276,7 +277,7 @@ class CaseStudy(models.Model):
     )
 
     # 1.5.5
-    type_of_ecosystem = models.CharField(
+    type_of_ecosystem = MultiSelectField(
         verbose_name=_("Type of ecosystem"),
         help_text=_("Select the most relevant type of ecosystem."),
         max_length=6,
@@ -405,7 +406,7 @@ class CaseStudy(models.Model):
     # 1.15.2
     image_caption = models.CharField(
         verbose_name=_("Image caption"),
-        max_length=500,
+        max_length=240,
         default=None,
         null=True,
     )
@@ -413,7 +414,7 @@ class CaseStudy(models.Model):
     # 1.15.3
     image_credit = models.CharField(
         verbose_name=_("Image credit(s)"),
-        max_length=200,
+        max_length=240,
         default=None,
         null=True,
     )
@@ -423,13 +424,17 @@ class CaseStudy(models.Model):
         verbose_name=_("YouTube Video"),
         help_text=_("Copy the URL to a related YouTube™ video that relates to the case study."),
         max_length=43,
-        validators=[validators.YoutubeURLValidator()]
+        validators=[validators.YoutubeURLValidator()],
+        blank=True,
+        default=None,
+        null=True,
     )
 
     # 1.16.2
     video_caption = models.CharField(
         verbose_name=_("Video caption"),
-        max_length=500,
+        max_length=240,
+        blank=True,
         default=None,
         null=True,
     )
@@ -437,7 +442,8 @@ class CaseStudy(models.Model):
     # 1.16.3
     video_credit = models.CharField(
         verbose_name=_("Video credit(s)"),
-        max_length=500,
+        max_length=240,
+        blank=True,
         default=None,
         null=True,
     )
@@ -446,7 +452,6 @@ class CaseStudy(models.Model):
     media_coverage_mainstream = models.TextField(
         verbose_name=_("Links to media reports"),
         help_text=_("Provide any links to mainstream media coverage."),
-        max_length=500,
         default=None,
         null=True,
     )
@@ -455,7 +460,6 @@ class CaseStudy(models.Model):
     media_coverage_independent = models.TextField(
         verbose_name=_("Independent grassroots reports"),
         help_text=_("Provide any links to grassroots/independent media coverage."),
-        max_length=500,
         default=None,
         null=True,
     )
@@ -464,7 +468,10 @@ class CaseStudy(models.Model):
     community_voices = models.TextField(
         verbose_name=_("Community Voices"),
         help_text=_("Add any direct quotes from members of the community that \
-                  relate to this project")
+                  relate to this project"),
+        default=None,
+        null=True,
+        blank=True
     )
 
     # 1.18.2
@@ -472,7 +479,6 @@ class CaseStudy(models.Model):
         verbose_name=_("Reports of direct communications"),
         help_text=_("Add any reports of direct communication between community members and \
                     representatives of developers/companies/investors."),
-        max_length=500,
         default=None,
         null=True,
         blank=True