Short answer: use this type of information for open-ended questions where the answer is just a few words (you can limit the number of characters accepted in the options). Open-ended questions make it difficult to process data in bulk. Instead, propose a list of pre-defined answers (single or multiple choice) whenever possible.
Paragraph: use this type of information for open-ended questions where the answer consists of a few sentences, such as a presentation or the candidate's motivations (you can limit the number of characters accepted in the options). As with short answers, mass data processing will be complicated.
Drop-down list: this type of question provides a pre-defined list of possible answers. You can define whether the candidate has only one possible choice (one T-shirt size among those listed, for example) or several choices (desired activities among those listed). In multiple-choice questions, you can define a minimum and/or maximum number of accepted answers. For a question to be used as an attribute of an article (material items), its type must be a drop-down list.
Checkbox: use this type of information when you want a “yes” or “no” answer. If you make this question compulsory in your form, candidates will only be able to proceed to the next step if they tick the box: this can be useful for asking candidates to confirm that they have read certain sections (volunteer charter, security information, etc.).
Attachment: This type of question asks candidates to attach a file to their application: résumé, photocopy of driving license, etc.
Date: In date questions, candidates can display a calendar to indicate their answer.
Additional phone number: can be used, for example, to request an emergency contact number. In the options, you can specify the default country.