How to use node-red Group in version 0.28 old version

how to use node-red Group in version 0.28 old version

I guess you meant version 0.20.8 and the "Grouping nodes" feature?

If so, then unfortunately no. Groups were first introduced in version 1.1.

https://nodered.org/blog/2020/06/30/version-1-1-released#grouping-nodes

OK ,I got it thanks!