Can both parents apply for Guardian visas if our kids have ED visas in Thailand?

A family moving to Thailand with children enrolling in an international school is seeking clarification on whether both parents can apply for Guardian visas, given that the children will be on ED visas. Advisors suggest that typically, each child can sponsor one parent for a Guardian visa, allowing both parents to apply if they have multiple children enrolled. There's also the option of one parent acquiring an ED visa for Thai language study. In terms of financial requirements, it's noted that proof of financial stability is essential for residing in Thailand without employment.