# Add
@commands.group(name='add')
async def add(self, ctx):
pass
@add.command(name='balance')
async def balance(self, ctx, amount:int, *, member:discord.Member=None):
...
# Remove
@commands.group(name='remove')
async def remove(self, ctx):
pass
@remove.command(name='balance')
async def balance(self, ctx, amount:int, *, member:discord.Member=None):
...