To create an application form for an advertisement, you first need to create a job advertisement for a given recruitment. Start by opening a recruitment, go to the Advert subtab and click Add advert. Go through the first and second step of creating an advert (advert template and consents), and in the third step you will be able to select a proper application form template.
It is not possible to create a new application form from scratch but you can edit the existing template after saving it. Once you’re done, don’t forget to save your advertisement.