(For Deep Excavation) How or what form should i build the diagonal strut (/knee strut) in ELS

Hi, I am building the ELS model in Plaxis 3D.

I am wondering what form (beam, node to node anchor) should I apply for the strut, which required to preloading. (I think it should be node-node due to prestressing)

But there are 2 diagonal struts connected from the main strut to waling (See attachment), should I just ignore those?

if I ignore them, the wall deflection result should be larger than reality and the ground settlement will also be over-estimated...

Please help...