4.22 M1 will be out today, The plans are needed for the release record, due SimRel M1. You can of course add additional items later.
As usual, you can simply create top-level/root bugs for the plan items and add the 'plan' keyword. Queries on the main plan will then show those plan bugs.
NOTE 1: You must set one of the 4.22 target milestone in order to let the query pick up the plan bug.
NOTE 2: Do not move existing/old plan bugs to 4.22 if work continues. That would destroy the older plan(s). Create a follow-up bug in such cases and refer to it in the old bug..
NOTE 3: Please make sure that you only tag root/top-level bugs with 'plan'. Bug fixes or simple things must not get the 'plan keyword.
Thanks & Regards,