Hello,
Thank you so much for getting in touch.
Rank Math by default lets you add up to 5 focus keywords per post. When adding a focus keyword, you can add another set of keywords by entering the first focus keyword and then entering another batch of keywords again. Similar to this example here:
More information about adding keywords here:
https://rankmath.com/kb/what-is-a-focus-keyword/#set-focus-keyword
Hope that helps and please do not hesitate to let us know if you need my assistance with anything else.
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.