Hi @LuisB,
In KoBoToolbox, you will be able to create survey forms and deploy them. The ones who create the forms have access to the server (which contains the forms and data). If you wish to provide access to other users you could provide him/ her with the user account name and password. However, if you do not wish to provide the admin access you could still share the project information such as the entered data and the reports to a user through the survey link. The person with the survey link will not have access to the survey forms, nor can s/he edit the form.
The other option, is by managing permissions. For details on managing permissions please see the support article attached here:
http://support.kobotoolbox.org/managing-your-project-s-data/managing-permissions
