We do not have a restriction imposed on how students should pay teachers. You have to discuss with the teacher on the preferred method.
We recommend paying per lesson to prevent misunderstandings (e.g., forgetting to pay for lessons, miscalculating the number of lessons that has been conducted etc.)
Some teachers may have their own set of requirements, which would be sent to you before you are matched with them. Please do ensure that their requirements are alright with you before proceeding to confirm. This set of requirements will last for the entirety of the music lessons, unless otherwise stated.