
Reload Attribute Info
Compare this Object with another
Add New Attribute
Add Attribute Element to an Array
Remove Attribute
Show only Attributes that have Values
Show Friendly Object Names
Show Distinguished Name in Novell Notation
Show Hex Output for Hex Values
Show Multivalued Attributes
Set Attribute List Filter
Show Attribute Names and Values
This option can add an additional array element to an existing multi valued attribute. It is only active if you select only one single attribute in the list and if your attribute can be multi valued (this information is evaluated from the directory schema).

You can also press the PLUS key on your keyboard or use the Add Add attribute element to an array button
to create new values for multi valued attributes.
By the way: If you see the Add Array Member option disabled and gray, then your LEX is probably in Read Only mode.