Dear Mam, hope you are doing fine.

For admission in Xth & 7th standard, you have bit not choice to manually visit the schools and ask for vacant seats for your children. That being said, if you can convince any good school within your vicinity to give your children admission, it'll be easier for yourself. Because some schools allow admission & some are way stricter than others. I'm but afraid you will have to visit the schools by yourself & apply for their admission.

Thanks. Hope it helps.