Z wave light switches

Please forgive me I’m now to this but been wanting to dip my toe into home automation for a long time any way here we go . Z wave light switches
How dos the switching arrangement work , I would like a 2 gang light switch with one of the ways dimming ( LED lamps ) and the other just on . Off .but confused to what I should order . Don’t need glass finish just plastic will do fine

Depending on where you are will dictate your options.
If you are in the UK here is a good starting point.

if you are in the U.S.

on/off switch - https://www.lowes.com/pd/GE-Iris-Single-Pole-3-Way-White-Light-Switch/999913765
on/off with dimmer - https://www.lowes.com/pd/GE-3-Way-Dimmer/50343474

although if you have LED lamps that are capable of dimming already… you can just use
both GE 12722 switches… assuming that you have a SMARTTHINGS HUB and a smart speaker (i.e. google home or amazon dot)