NP, Ulhas.
We have a closed source repository, complimentary to the open source otm-core, where management pages have historically existed. The SASS OpenTreeMap product provides access to these pages to map owners. We are in the process of open-sourcing much of this closed-source repository right now.
The Data Fields page on the OTM website lets the user configure what fields to show, and in what order. The configuration goes into the database. The otm-core back-end mobile api sends configuration information to the android app, which then configures tree and add-tree details accordingly.
Once the open sourcing is complete, the Data Fields page will be in otm-core, along with a whole lot of other management pages. Not everything is being open sourced. For instance, our SASS billing structure remains closed. But you will have direct access to the things that you need.
Hope that helps!
Robin