Select “withdraw” and then choose MBX (on Bitmart ).
Do a test with around 5 MBX to make sure you did everything correctly. There is a fee of 200 MBX for each transaction out of Bitmart.
You need your MobiePay MBX wallet address and your memo. Both can be found under “receive” (after you moved to the MBX tab, it is preselected on USD tab) within your wallet. Bitmart asks for a “tag” which is your personal memo.