How to edit forms in 1C Bitrix?

Question

User interface

There is a form on the site, you need to make some changes to it. How to do it? Where is she physically located to edit her template? Where do all the forms lie?

Answer 1

If we are talking about the form for editing the element of this infoblock, then you can create your own and specify it in the "File for editing the element, allowing you to modify the fields before saving" and "File with the form for editing the element".
Here is the guide
If you are talking specifically about the infoblock editing form, then it is located here bitrix/modules/iblock/admin/iblock_edit.php, but I strongly advise against editing it, as well as making your own edits in any core file at all ..