For Individual Modes
Use this option to assign a separate damping coefficient to each mode in the dynamic analysis.
When you select For individual modes, a numbered list of modes appears on the Modes tab. The number of modes in the list is based on the modes from the previous modal analysis.
Enter a value, without a % symbol, for each mode.
After entering one or more values, you can click Fill to change all zero values to the percent value immediately above them. Use the Fill button to assign the last damping coefficient value in the list to the remaining modes at the end of the list.
You can use the Clear button to change all the entries in the list back to zero.