You will have to make your own symbol and footprint but you will need to find a drawing with dimensions for the module before you can make a footprint.
The Tutorial has sections on Schematic Symbol and PCB Footprint creation.
If these are for the right board, copy the schematic symbol and try importing the Altium PCB:
[https://www.silabs.com/documents/public/schematic-files/BRD4160A-A02-pkg.zip](https://www.silabs.com/documents/public/schematic-files/BRD4160A-A02-pkg.zip)
This is a link to the main PG22 page.
[https://www.silabs.com/mcu/32-bit/efm32pg22-series-2/device.efm32pg22c200f128im40](https://www.silabs.com/mcu/32-bit/efm32pg22-series-2/device.efm32pg22c200f128im40)<br>
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This is the information for the board - now to find the pitch of the two rows of connectors.
[https://www.silabs.com/support/resources.ct-schematic-and-layout-files?query=BRD2503A](https://www.silabs.com/support/resources.ct-schematic-and-layout-files?query=BRD2503A)
You also need to know the position of a pin with respect to the board edges. In my experience this is poorly or not at all specified in far too many datasheets for PCB modules.
:)
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