How do i disassemble this toe touch drain stopper?

Normally drain assemblies unscrew the entire flange. There is special wrench with pins that protrude and catch the cross bars just below the focus level. I have called them a basin wrench but looking online they were called a drain removal wrench. This unscrews the flange and the stopper comes out with it (or the ones I have had came apart this way) Some of these drains are O ring sealed and some use plumbers putty to seal the flange to the tub. If it uses plumbers putty roll it out and coil it under the flange when the flange pulls tight it will squish out the excess wipe up with finger and it should be sealed. If the drain uses an o ring clean the oring if in good shape reuse if not replace or use plumbers putty to seal.

I have used 3 screwdrivers in the past putting 2 in the drain and Holding them with 1 hand and the 3rd horizontally between the 2 and twist , I prefer the wrench as I have broken the cross metal piece 1 time so use caution if you try this method over a 10$ drain removal wrench.

There is a metal ring around the top of black plastic body that holds the metal hook in place. Pry off the ring (carefully) to release the metal hook. Then you can pull off the black plastic body, being careful not to lose the hook down the drain. There is a coil spring under the black plastic body, be careful not to lose this down the drain. I used this procedure to disassemble my drain to clean out blockage. Unfortunately, I don't seem to be able to reassemble it.