@cyberco01
In the OnSave of SharePointIntegration,

do the following....
SubmitForm(SharePointForm1);
If(Combobox.Selected.Value="Submitted",
Set(varPerson,{'@odata.type':"#Microsoft.Azure.Connectors.SharePoint.SPListExpandedUser",
Claims:"i:0#.f|membership|" & User().Email,
Department:"",
DisplayName:User().FullName,
Email:User().Email,
JobTitle:"",
Picture:""
});
Patch(yourSPList, SharePointForm1.LastSubmit,{personColumn:varPerson})
)
** remember to replace Combobox, SharePointForm1, yourSPList, personColumn as applicable.