Hi @Cosmosflower, I'm glad you were able to answer your own question! It is true, as you say, that it is not possible to create a comb field in InDesign natively, and it has to be done in Acrobat. However, if you're doing a lot of this, and would nevertheless like a solution in InDesign, take a look at my (not free) FormMaker add-on: https://www.id-extras.com/products/formmaker/ It lets you do, in InDesign, pretty much anything to a form field that you can do in Acrobat, including creating comb fields and much more. There's also a free version for short, one-page forms.
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