Objects and groups have the following access (disable) properties
The object/group will be disabled whenever the expression entered here (128 characters maximum) is true. If the object/group is disabled, the operator will not be able to use any form of input, such as sliders, touch commands, keyboard commands and so on.
To insert a tag or a function, click the Wizard button to the right of this field. This button displays two options: Insert Tag and Insert Function.
There are three ways of indicating a disabled object/group: Embossed, Grayed, and Hidden.
[Disable when] Disable on insufficient area or privilege
The object/group will be disabled for operators whose area and privilege rights do not satisfy the requirements defined in the Access.
Note: If a group is disabled, objects in that group are also disabled.