Hello,
Thank you for contacting Rank Math today.
Rank Math already add the sitelinks and searchaction schema on the homepage but the appearance of the links is under the control of Google. The sitelinks will be extracted from the navigational menu links on your website. You should thus ensure that the links are well structured on your website for Google to reward you with this schema.
Looking forward to helping you. Thank you.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.