How to Make an FM Screech in Vital for Hard Techno

I take down the voices, turn on legato and glide, and take the release down. Then I open the unison to 16 and around 80%.

Open oscillator 2 and take down the level. Then FM based on oscillator 2 and find the sweet spot.

LFO 1 in seconds at a very fast rate goes on the fine tune at 100%. In the matrix, put it in bipolar mode so it stays in tune.

Envelope 2 gets a small attack and no release. In the matrix it goes to the global voice transpose, with the amount on 24 so it goes up two octaves.

In the effects section I add an EQ to cut the bass and distortion on Downsample mode to give it that vintage analog feeling.