Pins Fields to the Filter Pane in SharePoint Libraries

# This script updates a field within a SharePoint Online library to pin it to the top of the filters pane.

# Parameters
function Pin-FieldsInList() {
    param (
        [string]$SiteUrl,
        [string]$ListTitle,
        [string[]]$FieldNames
    )

    # Connect to SharePoint Online
    Connect-PnPOnline -Url $SiteUrl

    # Loop through each field to update its properties
    foreach ($FieldName in $FieldNames) {
        Write-Host "Updating field '$FieldName' in library '$ListTitle'..."

        # Get the field
        $Field = Get-PnPField -List $ListTitle -Identity $FieldName

        if ($Field) {
            # Update the field to show in the filters pane
            Set-PnPField -List $ListTitle -Identity $FieldName -Values @{ShowInFiltersPane = 1}
            Write-Host "Field '$FieldName' has been pinned to the filters pane."
        } else {
            Write-Host "Field '$FieldName' not found in library '$ListTitle'."
        }
    }
}

# Example how to call the function Pin-FieldsInList 
Pin-FieldsInList -SiteUrl "https://contoso.sharepoint.com/teams/TestMultipleLibraries" -ListTitle "amberlib" -FieldNames @("Modified", "Type")