I think Im doing FT Training Wrong.

[Altamir]

So on Day 1 Tier II

Load sets
2 x Thighs / 1 x Quads / 1 x Hams / 1 x Adductors / 4 x Calfs

So should this be done like this?
Thighs
Quads (to failure)
Thighs (to failure)
hams (to failure)
adducts (3 failure points)
calfs (?)

adducts should be 2 failure points at tier 2. You are doing a rest pause set. so set to failure, rest 15 breaths, another set to failure at the same weight. Calves should be 4 sets, 1 failure point on the last set.

This would be zigzagging the compounds and isolate movements right? Like Thighs I would use compounds movements like leg press or squats and on quads and hams an isolate exersize.

Yes

On day 3 and 4 (muscle rounds) I dont know why the all the muscle groups and grouped an a "border" or a "box" (like the supersets on legs on day 2) and triceps, calfs, biceps are out of those lines. Does this mean that we have to do
1 MR Thighs then
1 MR Quads then
1 MR Hams then
1 MR Thighs?

Making it 2 MR Sets in total for thighs?

2 MR sets total for thighs. Typically done Thigh / Thigh / Quads / Ham. or Thigh / Thigh / Hams / Quads. But you can structure this (and to some degree the loading sets above) however you like. So if you want to bring up your hamstrings, you could do Ham / Thigh / Thigh / Quad. etc.

Hope this helps!