const uint8_t CUSTOM01[][2] = {{56,37},{58,37},{58,36},{60,35},{60,34},{60,33},{62,34},{62,33},{62,32},{63,33}};
const uint8_t CUSTOM02[][2] = {{56,37},{58,37}};

const uint8_t* const tables[] = {
  &CUSTOM01,
};

void setup() {
  Serial1.begin(115200);
  Serial1.println("");
}

void loop() {
  delay(1);
}

/*
const uint8_t CUSTOM01[][2] PROGMEM = {{56,37},{58,37}};

const uint8_t* const tables[] = {
  CUSTOM01[0],
};

constexpr int TABLES_N = sizeof(tables)/sizeof(tables[0]);

//constexpr int itemSize = sizeof(CUSTOM01[0]);
//constexpr int itemSize = sizeof(CUSTOM01[0])/sizeof(CUSTOM01[0][0]); 
//constexpr int itemSize = sizeof(uint8_t)*2;

void setup() {
  Serial1.begin(115200);
  Serial1.println("");

  // read single byte
  uint8_t b = static_cast<uint8_t>(pgm_read_byte(&CUSTOM01[0][0]));
  //Serial1.print("b: "); Serial1.println(b);

  uint8_t *dst = (const uint8_t *)pgm_read_byte( &(tables[0]) );

  //uint8_t *b = static_cast<uint8_t*>(pgm_read_byte(&CUSTOM01[0][0]));
  //uint8_t *b = (const uint8_t *)(pgm_read_byte(&CUSTOM01[0][0]));
  //PGM_P base = CUSTOM01[0];
  //uint8_t *dst = (const uint8_t *)pgm_read_byte( base );
}

void loop() {
  delay(1);
}
*/