change Some columns in radgant to ReadOnly ="true"

[bassam]

How to change Some columns in RadGant to ReadOnly ="true"

Colums  Default

and Colums GanttCustomField

 

[bassam]

Thank you very much
The problem was not solved by changing the following property

AllowEdit ="false"

[bassam]

Thank you very much
The problem was solved by changing the following property
AllowEdit ="false"