In case of several forms in a single website it takes times to modify all forms. When finished a form it is necessary to go to the side menu, click on forms and select a new one to start a new modification. Easyer if there was a select field ( Next Form) above or under on the modification page of a form .
Easyer also if the short code of the form was displayed on the modification page. Specially after importation from Contacform7 when a control is necessary (recaptcha for exemple) and have to be placed on the regarding contact pages.
Maybe can you have a contact with the developpers of “The 7” to integrate the form choise when creating a page. Actually this is possiblbe for Contact form7.