How to enable walk through walls mod on Mac?

[roseradestan]

Hi,

 

I'm pretty new to Rejuvenation and started playing a few days ago.

(For context, I downloaded the Modular Modpack.)

I wanted to know how I could enable the walk through walls mod on Rejuvenation and how to disable it as well on Mac.

Also, how do I know it's on? Do I have to be at a specific place in the game to know? Anything helps.