How to manage an RHEL8 end-point?

As we have the option in RHEL7 to manage an end-point to add and remove the channels. Please find the below steps for RHEL7.

List attached channels

spacewalk-channel -l

List available channels

spacewalk-channel -L

Remove a channel

spacewalk-channel -r -c rhel7-x86_64-ansible-2-rpms

Add a channel

spacewalk-channel -a -c rhel7-x86_64-ansible-2-rpms

How we can achieve the same from RHEL8 endpoint ?

Thanks.