Lots of circles to be engraved in XTool Creative Space

I'm using the offset negative and positive to create some engraved rings. How do you engrave just the middle?
Also looking at changing the settings for different items.

[@logonfires3649]

i cant find offset in creative space where should i look?

[@Wonder.learnsweden]

@@logonfires3649 top right. What version do you have?