Back to Help
Surveys

Building observation forms

The Form Builder lets you design the data collection forms that field researchers fill out on their mobile devices. Every survey has one form template — build it carefully, because field teams rely on it offline.

Opening the form builder

From a survey detail page, click Form Builder. If the survey already has a template, it will load automatically. If not, you'll start with a blank canvas.

Form Builder showing the three-panel layout with field palette, canvas, and properties panel

The three-panel layout

The builder has three columns:

  • Left — Field palette & sections: Drag field types onto the canvas, and create named sections to group fields
  • Centre — Canvas: Your form as it will appear on the mobile app. Click a field to select it.
  • Right — Properties panel: Edit the selected field's label, help text, validation rules, and options

Field types

FieldBest used for
TextNotes, descriptions, condition comments
NumberDBH, height, count, depth
DropdownVegetation type, context type, disturbance class
CheckboxPresence/absence, yes/no, multi-select attributes
DateCollection date, event date
PhotoSpecimen photos, context photos, damage records
CoordinatesSecondary GPS points (primary is always auto-captured)
Species LookupLinks observation to a taxon in the Species Register

Hover over any field type button to see a description before adding it.

Sections

Use sections to group related fields — for example, "Site Conditions", "Species Details", and "Photo Record". To add a section:

  1. Type a section name in the Sections input in the left panel
  2. Click the folder icon or press Enter
  3. Drag fields into the section on the canvas, or select a field and change its section in the Properties panel

Field properties

Click any field on the canvas to open its properties:

  • Label — The question as it appears on mobile
  • Help text — Optional hint shown below the label in the field
  • Required — Whether the field must be completed before the observation can be saved
  • Options — For dropdown and checkbox fields, the list of choices
  • Section — Which section this field belongs to

Undo and redo

Use Ctrl+Z / Ctrl+Shift+Z to undo and redo changes. Up to 50 actions are stored in history.

Previewing your form

Click Preview in the toolbar to see your form as it will appear on the mobile app. Use this to check field order, section groupings, and label clarity before saving.

Saving the template

Click Save Template. The form is immediately available to field researchers assigned to this survey. If the survey has already been synced to a device, the researcher will need to re-sync to get the updated template.

Tip: Keep forms as short as possible for field use. Every extra field is time spent in the field on data entry. Consider whether data can be captured by GPS or photo rather than a typed field.

Related Articles

Ready to try TerraSitu?

Start your free trial — no credit card required.

Start Free Trial