Camunda multiple tasks per view in a web page/form

[Dave]

I am working on a rather simple (imaginary) BMPN sketch/demo building on [this](https://www.youtube.com/watch?v=VgJQ8nPzEMQ).

I have built a frontend using a Javascript library of my liking, It successfully gets data and posts data to the camunda engine (hurray!). Now I want to build further complexity:

In my case the apply for loan task needs to be split into the following 3:

1. The user inputs SSID.

(The next task is decided upon whether the person is a new customer or not, 2 or 3.)

2. Provide personal address information -> Select Loan type.

3. Select loan type.

(if already a customer the address information is provided by a backend system and prefilled)

   

Default way appears that all tasks implies a separate view.

I want to limit the amount of 'pages' of my forms.

Infact I only want one page (see ascii below).

Are there any examples or best practise on how to build a standalone form for Camunda/BPMN that contains multiple tasks?

    SSID:     -------    

        

    Address information:

     Name:    -------   

     Address: -------   

     City:    -------

        

    Loan type:

             (x) A

             ( ) B

             ( ) C

Problems occur:

1.

- The user inputs SSID.

- The user enters ssid and camunda moves to task -> Provide personal address information

- The user returns to the ssid field since they made a misstake.

- Camunda must roll back the process to the previous task, 1 step?

2.

- The user inputs SSID.

- The user enters ssid and camunda moves to task -> Provide personal address information.

- The user enters loan type A.

- The user returns to the ssid field since they made a misstake.

- Camunda must roll back the process to the correct task, X steps?

Is there a best practise for this use?

from the solutions I can think of:

- Locking parts of the form: BUT! It feels rather strange to lock some of the fields depending on what task the user is in.

- Multiple pages (standard camunda way). BUT! I really want to have all the inputs on the same page!

- The user posts to multiple tasks at the same time. BUT! This breaks the usage of bpmn as a view point completely.