1.) Load the sgf-file of the game into Sabaki.
2.) Attach the Leela Zero Engine to one of the players.
3:) Enter at the GTP console: time_settings = 0 3 1
(Leela Zero is very strong at 3 seconds, easily enough to check for blunders, change setting if especially interested in a variation ) [Nvidia 1080Ti, your milage may vary, just use a longer time setting and be patient if necessary
Review process:
Make the next game move by hand -> Leela answers with its best move while Sabaki marks your real next game move -> Compare the moves (be ashame of your blunders) and look at the GTP Window for variations and winrate -> Use mousewheel to take back Leelas move and enter the next real game move -> (rince and repeat