How to change custom fields for all matches in schematics?

In my schematics, I have several 10k resistors with the 0805 footprint and a custom field LCSC denoting the JLCPCB part number. I need to change them all to 10k 0603 and set a different LCSC value. Currently, I’m doing it manually.

How to do it at once?

Edit Symbol Fields… located on the top of the schematic editor:
image

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