Can anybody share a template to load updated employee mobile phone numbers please?

Summary:

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We have a list of updated mobile phone numbers that would save a lot of time if we could upload them rather than add/amend individually. Does anybody have any advice on the best way to do this or a sample template would be even better?

Thanks in advance

Version (include the version you are using, if applicable):

22C

Code Snippet (add any code snippets that support your topic, if applicable):