With Spring 2020 Custom Settings can only be accessed by users with Customize Applications permission. Community users don't have access to Customize Applications permission. - Salesforce Developer Community
Use Hierarchy custom settings to avoid hard coding in formula field, custom button, process builder or workflow rules – Home
customsetting - Is that possible to change the custom setting "visibility" from protected to public once after it is created? - Salesforce Stack Exchange
How to use Custom Settings in Salesforce to store information
Custom Settings in Salesforce - Salesforce Drillers
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Custom Setting and Custom Metadata Type - SalesforceCodex
Using custom settings variables in apex class? - Salesforce Developer Community
metadata api - How do I fix the error when adding Custom Settings? - Salesforce Stack Exchange
▷ Custom Settings in Salesforce - MindMajix
Custom Settings in Salesforce - How to Create Custom Setting?
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