In the classic client, it is possible to use combination to make a macro to “mount” by using one hot key, but it seems not have the same macro for “dismount”.
if it is possible to add “dismount” into current macros ?
I do not believe so. I think you would need to use UOA with CC.
The changes they did to dismount back then (you can't dismount people while mounted)
Was such a bad easy fix.. that did so much damage to the game open world activities.
If you were into PvP you HAD TO buy/use UOA third client by that point.. You could legit dismount/swap weapon/activate dismount/remount in a fraction of second.
I personally stopped recommending UO when this change came in effect around ~2006.
Things just kept getting worst after that.. thx to mythic corporate culture toward UO.