OK people are confusing the questions you are asking. From what I understand from your post you’ve basically asked two questions which is transferring international monthly income to meet retirement Extension of Stay requirements is 12 monthly payments into a Thai bank account in your name only. This has to be before you apply. All 12 months. Under monthly income criteria.
Other Q was right reason for transfer. I presume again you are asking what to select on the Wise Application. Answer is : With WISE and the transfer select the reason for transferring money as ‘Funds for long term stay in Thailand’ it’s the very last option. That’s it the question you’ve asked have been answered correctly in this post a good few times now. Hoping you understand now.
I hope that helps and it does make it a lot easier this way when you go to Bangkok Bank for the paperwork for immigration. In other words it is tagged with a code for that reason alone. Far far less complicated as tagged code on your statements from BB will show this.
Make sure your select the right reason in the Wise application right at the bottom of the selections. It just makes it a lot easier when you have to get all the info from your BB account for your immigration application appointment