wsus types confusion.

but we also see quarterly security only  and quarterly roll up

You mean Security Monthly Quality Rollup? Quarterly Rollup... Where do you see it? Can you post a screenshot?
Monthly Rollup = A tested, cumulative set of updates for a specific period.

also wsus offline (third party app) . if I skip a month  will I be missing patches after I put the next month in, if they were security only ?

If this is a rollup Windows update, you only need the most recent update. If you skipped February, go to March.


What updates contain. I like this explanation.
The "Security Only UPDATE" is not cumulative. The "Monthly Quality ROLLUP", "Preview ROLLUP", and "CUMULATIVE IE updates" are cumulative.
The "Monthly Rollup" contains all updates (Security, Quality (non-security), and IE)
The "Security Only" contains only the current month security updates. (so provides small download method to remain security patched, if all are applied monthly, or way to skip a problem month patch... if you never apply a rollup)
The "Preview Rollup" is the next month's (cumulative) Quality updates, and this months rollup.
The "Cumulative IE update" is ... just what is says, all updates for IE to date.
https://community.spiceworks.com/topic/2006159-ms-updates-bundle-security-vs-security-monthly-quality-rollup

sorry I can’t read 😊 security only Quality update.  not quarterly

so would it be correct to say.   for example.  June security only kb1234. will be in July security roll up.  (or the issue it fixed addressed  at least ).  I just want to be sure. the offline boxes we do.  if I miss a month.  the security only fixes are captured in next months cycle.

thank you for your help much appreciated

thanks again for quick and detailed response

You are welcome!