The E-M1X and the E-M1 Mark III do have already a lot of AF layout presets, which are usable in many different situations, but you can increase your AF hitting rate in case you are using customised AF points. You can adjust them like follows
1 In the gear menu select A2 “Target Mode Settings” and open the menu with the arrow right key.
2 You can program and save up to four AF field presets.
3 To be able to select those presets you have to activate them under “Mode Settings”.
You also can watch the following film, which shows step by step how to program your AF fields.