Thank you for your patience! This form you sharing is a custom design, you can see the backend of it here: https://play.dhis2.org/40.0.1/dhis-web-maintenance/index.html#/edit/dataSetSection/dataSet/lyLU2wR22tC/dataEntryForm
You can also copy paste the source code and then paste it in your data set custom design. To access a custom design, from the Maintenance app under dataset tab, select the dataset options and then select “Design data entry form”.
Hope this helps! Thanks! 