Query on swapping out French Doors for Bi-folds

I am replacing External French doors and side windows with a bi-fold door. Should be straightforward enough i'm thinking as im using the same width as the existing opening which has a lintel in place. The question I have is when I cut out the bricks below the side windows how do i deal with the cut face of the bricks ?. What is the standard practice ? Do you remove the cut bricks and turn them around with the manufactured face showing to creat a consistent looking ege ? or cover it with trim ?. I understand (and to match the other doors and windows) that the new frame sits on the back edge of the front brick ( brick/block cavity) or is it easier to mount the frame against the front edge of the brick so the cut is affectively hidden by the frame sealer ? photo's attached show the existing. I have the door supplier installing it but i need to prepare the opening for them beforehand.

Any help well appreciated, cheers, S

If you do it properly, the cut bricks should be turned around to show a proper face up the reveal.

Some bricks look OK when cut and match the existing faces, so these could probably be left if they look OK.

Covering with trim is crap. And it falls off quickly.

Fixing frames flush with the front face of a wall causes damp and condensation issues on the inner reveal, and potential issues with the drip of the lintel above, so is bad practice.

Sorry for the late reply, but many thanks for clarifying this. Cheers, Steve.