What does this ???? mean

Hi noob here. 2 questions -

• What do these question marks ??? mean here? Is it for choosing who you want your opponents (AI) to be in the game? • Below these question marks, I see 4 symbols, what do they mean?

Hi noob here. 2 questions -

• What do these question marks ??? mean here? Is it for choosing who you want your opponents (AI) to be in the game? • Below these question marks, I see 4 symbols, what do they mean?