To add rights for an object or entry use:
For object
| nischmod class+right object-name | 
For table entry
| nischmod class+right [column-name=value],table-name | 
For example, to add read and modify rights to the group of the sales.doc.com. directory object you would type.
| client% nischmod g+rm sales.doc.com. | 
For example to add read and modify rights to group for the name=abe entry in the hosts.org_dir.doc.com. table you would type:
| client% nischmod g+rm '[name=abe],hosts.org_dir.doc.com.' |