Need help for modding

i want to create my own interface mod where the holding pattern of units is not listed in numbers rather than shows for every unit that will be created an icon, like in normal aoe 2. Iam have no expirience in modding and I don’t even know if this is possible. Can somone help me with the basic of modding and show me how to do this?

Usually modding doesn’t allow you this much flexibility. You want to change a core feature in order to make it worse tbh.