To run a new shell in a ConEmu tab using a different ActiveDirectory user account than the one currently logged on to the system, use the following settings:
cmd (the regular Windows shell):
cmd.exe /k “ConEmuBaseDir\CmdInit.cmd” -cur_console:n:u:DOMAINNAME\username:t:“cmd (adm)”
PowerShell:
powershell.exe -cur_console:t:“PS (adm)” -cur_console:n:u:DOMAINNAME\username