Nested header And Lockable header and column

[hung21c]

Features "Nested header" and "Lockable header and column"  can not be combined together. Is it a bug or default of Sigma Grid

[steven]

No, they can't. These two features conflict with each other. See the following case
------------------------
|colA|colB                   |
------------------------
|coaa|cob1|cob2|colb3|
------------------------
if user would like to frozen cob2, what header should look like?
------------------------
|colB||colA|colB            |
------------------------
|cob2||coaa|cob1|colb3|
------------------------
or
------------------------
|cob2||colA|colB            |
-------------------------
|      ||coaa|cob1|colb3|
------------------------
?

Actually, customized header could be more complex than ones above.  it could be

------------------------
|colA|colB                   |
------------------------
|overcross  |overcross2|
------------------------
|coaa|cob1|cob2|colb3|
------------------------

Grid could not know how to deal with it