Since Minecraft has a new launcher, I do not know how to assign more ram there
Try it in the Profiles tab? I'm not sure, but would have to be very easy to find.
It does not exist anymore. Now called "installations"
Then stop there.
I can't remember that name, and I have no desire to turn on the PC
In the launcher you have "installations" above. On top of that, you'll see all the profiles… If you click on one, you'll see name, resolution, version and path. Below there are "more options"… Since you can also find the Java arguments…
Yay, I guessed right!
: D