Changing controlls to left mouse button

I am trying to change the interact function to the left mouse button and it does not seem possible. The left click selects the action to be remapped, but will not actually set.

i know this doesnt answer the question… but how do you attack then?

They likely switch their primary attack button to something on the keyboard, I know a lot of dudes who do this in MMOs they make primary attack like 1 or a letter that’s comfortable :man_shrugging:t4:

Try reloading your game before making the settings change, if it doesn’t accept the input it may not be possible currently in the pre-alpha