As I can perform this task in bulk? It could be through a CVS for various courses?
I would like to help, but I don't understand CVS ?
Its referred as versioning system in the glossary.
I guess you want to upload users to many courses at once via a comma-separated-file filename.csv?
You can use the bulk upload and add course or cohort.
more complex:
if cohorts are used, add a cohort enrolement plugin to the course.
No, what I want is to associate certain cohorts for courses, the process of uploading users cohorts know him.
I do not know how many cohorts associate many courses.