hello everyone, I just find the solution. It was about "updae course settings" in the "role difinition". When I allow this property, I can see the buttons as a teacher.
Blocks
teachers cant see the buttons in the blocks
ການສົນທະນາຖືກລັອກ ດັ່ງນັ້ນ ທ່ານບໍ່ມາສາດຕອບກັບມັນ.