You can do it with text fields wrapping inside the flowable subforms, making the text fields w*h expand to fit, multiline, etc. There will be some alignment issues but totally depends on the data entered by users.  

Check if this helps;https://experienceleague.adobe.com/docs/experience-manager-learn/forms/some-useful-integrations/service-now.html?lang=en 

Have you enabled the template? You need to enable it. Execute the following steps to enable the template:Tap Tools > Templates.Navigate to the  template, select it, and tap Enable.Tab Enable again to confirm.

While setting the field value, use script like below:this.rawValue = this.rawValue.toString().toUpperCase();

If subform are placed on different master pages then I don’t think so space can be managed, because they are on separate pages.

For the header you can use a table with a header, table header can span multiple pages if having the header on a dynamic table is needed on each page. Conditional Breaks section is there in the designer but that is for a specific subforms/table if we want to break the subform/table based on some con...

You can have more than one content area inside a master page but when you place a specific page on a master page it will start from a new page. That's the purpose of the master page to have different styles for different pages.

In your existing script, I did below changes and it is working for dropdown value. You can add similar to other fields. form1.#subform[0].#subform[1].Subform6.#subform[0].#subform[3].Table3.TotalSubs.NumericField1[0]::calculate - (FormCalc, client)if(Row2.DropDownList.rawValue == "YES") then$.rawVal...

I checked your form and found that your top form (Expenses_subform) is positioned, make it Flowed. It will work.

Need to check form(share @ vkatoch07@gmail.com if you can share)