Based on thing no. 4647819 by prawinparajuli.

I have separated the models and added holes to place magnets inside. The gcode I used on my Prusa MK3S. It will pause at the appropriate time for you to place the magnets. Also included the Prusalicer plates. The dog uses a 10mm x 3mm magnet and the man uses two 8mm x 3mm magnets. Attached is also the Fusion file. The design is parametric so you may change magnet sizes, etc.