General developer forum

hello everyone, I'm new to the community and moodle too. I am here to have help on the procedure to follow to meet my need present as follows: I want to add an organization profile (school / training center ..), in the account creation page, the user chooses the organization type after
I must create an instance of this organization (eg school A) with the possibility of creation user accounts and administrators and manage the
 organization independently from the platform. I saw "Cohort" but it is not the same case for me and what there is a way to add this functionality
by the creation of functions which uses the predefined functions of moodle.? I am stuck on this point and I want your help