Help!!! Partition Scheme Tools

HI,

this is my first post on arduino forum

i have a project using mqtt and bluetooth at esp32
but the memory is not enough.

then i tried to searching for memory partition
but i couldnt find the "Partition Scheme" Option in
my tools at Arduino.ide

did somebody have solution?
my Arduino.ide is at 1.8.9 version

Maybe it will help:

Custom partitions table #703 https://github.com/espressif/arduino-esp32/issues/703

Adding the New Partition Scheme to the IDE

Once the new partition scheme file has been created you need to add a reference to it in the boards manager so it can be selected in the Arduino IDE

Partition Schemes in the Arduino IDE