Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience caused.
Some options are only available when Advanced Mode is enabled in the Rank Math dashboard:

Once done, you will get the Redirections option.
Hope this helps.
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.