It's possible modify online models present on app, let's see together what are the steps to be taken: 

1. Download the Windows version of Nios 4 at this link;
2. Create a database with the model that you want modify;
3. Based on the changes you want to make, you can follow the instructions in the video tutorials on the dedicated Youtube channel. It's possible add fields, tables, edit prints, interfaces etc...
4. After making the desired changes, you can follow two different ways to importing them into the app: 
   1. Exporting and importing the whole database:
      1. Go to option menù  and follow the path shown in the following image: Database ==> Select the database to export ==> Export ==> Export database ==> Create database modello;
      2. Save it in the smartphone or tablet memory;
      3. In the app, open the panel with the databases list and follow the path shown in the following image:  Add database ==> Insert database name ==> Import file from device ==> Select the database file.
   2. Exporting and importing single pack to apply on installed database. :
      1. Go to option menù  and follow the path shown in the following image: Sections ==> Select the section that you want export ==> Export ;
      2. Save it in the smartphone or tablet memory;
      3. In the app follow the path shown in the following image: Help ==> Add pack ==> Select the pack file to install; 
   3. Install a pack is indicated for those have already entered data in the database, since the installation only provides a rewrite of the structure but not the data. 

If you need more clarifications you can contact us filling the form.