Okay so we want to unlink my direct tv account and link a family members direct tv account to be able to watch the apps on our roku.. how do I go about that?
I don't know if any way to do it all at once.
For any channel apps requiring your DTV log in, find the way to log out. Each has its own interface, so look for the log out option under something called Settings, Options, Account, or similar.
Once logged out, log back in with the desired DTV account.