Note that changes are not written out to PVs, yet, until the changes are saved.
Cells in columns which have a gray background and a Tooltip that indicates read-only can not be edited. See Configuration Files.
In the example below, the rows for "MEBT 1" to "CCL 4" were selected, then the right button context menu was invoked on one of the selected cells in the "PwrLmtAdm" column. After entering a value and pressing OK, the "PwrLmtAdm" cells for rows "MEBT 1" to "CCL 4" will be set to the entered value.
Below, the "PwrLmtAdm" column was selected. This will obviously only be possible for editable columns, not for read-only columns, indicated by a grey background.
Pressing the OK results in the screen below. Note how all but the "RFQ" entry which was already set to a value of 1000 are highlighted to indicate the changed value, and the asterisk next to the window title (*rf_admin.pace) also reflects that some values have been changed.