Collecting data is one of the major functionalities of Tattara app in general. A formed structure is to be created using the XLSform format by the project administrator while creating the app to specify the type of information(data) he wants to gather.
To get the form structure, click on the submit app data button on the project interface to use web form as indicated below
After clicking the use web form button, A form for capturing data is revealed
When you are done capturing the data you can either submit the data or save as draft to enable editing later.