In Delphi, how does one control the front-end permissions by using the software on the front-end)

In Delphi, how does one control the front-end permissions by using the "das" command?
(1) Principle:
Front-endProgramData is transmitted between the application server and the application server through the running of the DCOM mechanism. The security mechanism of the DCOM object is based on the security module of Windows NT. In other words, to set whether a user can remotely run the DCOM object

The most basic condition is that the user must be added to the Windows NT user group so that the user is eligible to connect to the Windows NT Server, the DCOM permission determines whether the specified application server can be run.
(2) tools:
There is a dcomcnfg. exe tool in the System Directory, which can be used to set the running permissions of the application server.
(3) Self-control through the Program (perhaps more desirable, avoiding the configuration complexity of the configuration personnel)