Hello computer geeks...

Please... How can I become a full fledged administrator for giving access to internet services through my unlimited swift 4G hotspot or router, whereby I control permissions from clients/users who connect through phones, laptops or any other devices

* giving access to specific people / only clients
* clients having different personal login usernames and password to access data..
* having full control over bandwidth and data usage
* controlling time limits and usage.
* giving clients access for like a month or so...