Mobile WMS does not come with a complete print solution.

Print Label 

You can however, modify the Print Label function Label function (Codeunit TF Mobile WMS Adhoc Registr.)

The print job is handled in Codeunit TF Mobile WMS Adhoc Registr.

Printer selection

Print Label is imagined to do Bluetooth printing.

...

However, if you want to modify the list used for Print Label, is it located in Codeunit TF Mobile WMS Reference Data (AddPrinterList)