Hi @Roel
Welcome to the community and thanks for the question!
Yes, it’s possible to customize the form, but it has some disadvantages such as not being able to display the form exactly the same in the android app and not using basic HTML might cause issues with error reporting.
Custom Forms
When the form you want to design is too complicated for the default or section forms then your last option is to use a custom form. This takes more time, but gives you full flexibility in terms of the design. In DHIS2 there is a built in HTML editor (CK Editor) in the form designer which allows you to either design the form in the GUI or paste in your html directly (using the “source” window in the editor).
source
Here’s a recent demonstration from another post:
Hope this answers your question @Roel? Thanks!