Webi 4.1 Bookmarks

Hello,

I am trying to develop an application in WEBI, BO 4.1 and have a few question :

Can have the bookmark feature for end users as we have in Bex when we execute the report through Portal?

Is it possible to disable the Save button but the user should be able to add or remove fields from the report ?

Also, Can we restrict a user to save a WEBI report let us say starting with 'ZBOBJ'  but he can save the report in his favorites as "YBOBJ" similar to what most end users can do with a Bex query in Production environment through Bex analyzer.

Thanks in advance.

Regards,

Mahesh