Mitras slimline splitter on expansion box

Hello, i'm trying to configure my new system having one expansion box by tnak. The problem i face is that i can't see how to switch the mitras interface on the first expansion box to slimline splitter. I'm probably missing something. But couldn't find it in the programming guide

Hi,

The MiLB port on Expansion boxes are always enabled.
You would just have to take the communication cable and connect it to that port. From there, go to the Slimline settings page and assign the illumination channels to each LED channel on the Slimline.