You can use the command spell on larger groups once you have at least a second-level spell slot.  This could be used to command enemies to stop, disrobe, or shred them until the end of their turn, which gives your party some breathing space. It is your decision. The command spell is extremely situational and players often use it to their advantage. However, you don't have to burn the spell slot. Sometimes, commanding one person is enough. You might not want to spend one of your higher-level spell slots on a lower-level spell once you have access to more powerful spells.