User Account
You can link a constituent to a user account when you want to give the constituent limited access to
If a constituent has user access, you can view and manage the account associated with their record under User account. For more information about how to add a user, see Settings.
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Under Constituent summary on the constituent record, select Edit, User account.
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Search for the constituent's account.
Note: You can view a constituent's account from Control Panel, Security.
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Select Save.
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Under Constituent summary on the constituent record, select Edit, User account.
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Clear the User account field.
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Select Save.