Membership plugin - Import Users from CSV automatic assignment of subscription

Hello,
I know there are users trying to do the same, but I have limited php knowledge and limited resources to do it, I would need to change the import users script to automatically assign subscription and access levels to the users, can someone help me?

these are the posts I looked at:
- https://premium.wpmudev.org/forums/topic/database-tables-manual-import-of-members?replies=8#post-468040
- https://premium.wpmudev.org/forums/topic/how-to-add-a-membership-member-level-when-importing-users-by-csv
- https://premium.wpmudev.org/forums/topic/anyway-to-do-a-bulk-member-import-with-subscription-dates

but none has a definitive and working solution.

Thanks again.