How to downgrade SAPUI5 Plugin Eclipse

Hello team

Could you please guide me how to "downgrade SAPUI5 Eclipse"

SAPUI5 Plugin Downgrade of Eclipse

In the Eclipse "Install New Software" column, it says "only latest version of SAPUI5 Plugin" is possible.

when clicking over "Share Project" in NWABAP, a warning pop out comes in for "old version of SAPUI5 Version - NWABAP.

Thanks for your help.