What are the latest extension requirements for a Retirement Visa at Changwattana?

A user is seeking the latest extension requirements pamphlet for a Retirement Visa at Changwattana, asking if anyone can provide a copy. There are comments suggesting that while a specific pamphlet may not be available, the requirements remain largely unchanged from the previous year. One user mentions that additional documentation, like a lease, may not be required at Changwattana, and another comments on the unexpected mention of a medical certificate for the extension.