Hi @ShaileshBassi I have suggested the above method to my team and waiting for their reply.Will reply back in some time.Thanks for the all comments.

Hi @Jörg_Hoh We have one reviewer group and for this group we want to hide the save and close' button in page properties. That means that group members can open the page properties, see the details but can not save the changes as "save and close" will be either invisible aur not responsive for them....

Ok, thank you for quick help. 

Or it will be helpful if anyone can tell me where this save and close' button stored in aem.