How to create a new ssh user with a limited access

How to create a new ssh user with a limited access

for eg i need new ssh user in the name of vas and that user can access only

/usr/local/cpanel/frontend/x3

and i need add root access with folder restriction
or i need that user to run only a specif cmd in ssh if any other cmd is given then it should not run
how is this possible

 

how i can add new ssh user to access only this location /usr/local/cpanel/bin/dcpumonview