Hi,
You need to get the columns name, using if_salv_wd_column_settings~get_columns( ).
after that,
lr_column_left = l_table_left->if_salv_wd_column_settings~get_column( 'the name of column').
lr_column_left->set_fixed_position( cl_wd_abstr_table_column=>e_fixed_position-left)
lr_column_left is type ref to cl_salv_wd_column and l_table_left is type ref to cl_salv_wd_config_table
For scroll,
if_salv_wd_table_settings~set_scrollable_col_count( X number).
Regards,
John.