+=item has_sections AGENTNUM
+
+Return true if invoice_sections should be enabled for this bill.
+ (Inherited by both cust_bill and cust_bill_void)
+
+Determination:
+* False if not an invoice
+* True always if conf invoice_sections is enabled
+* True always if sections_by_location is enabled
+* True if conf invoice_sections_multilocation > 1,
+ and location_count >= invoice_sections_multilocation
+* Else, False
+
+=cut
+
+sub has_sections {
+ my ($self, $agentnum) = @_;
+
+ return 0 unless $self->invnum > 0;
+
+ $agentnum ||= $self->agentnum;
+ return 1 if $self->conf->config_bool('invoice_sections', $agentnum);
+ return 1 if $self->conf->exists('sections_by_location', $agentnum);
+
+ my $location_min = $self->conf->config(
+ 'invoice_sections_multilocation', $agentnum,
+ );
+
+ return 1
+ if $location_min
+ && $self->location_count >= $location_min;
+
+ 0;
+}
+
+
+=item location_count
+
+Return the number of locations billed on this invoice
+
+=cut
+
+sub location_count {
+ my ($self) = @_;
+ return 0 unless $self->invnum;
+
+ # SELECT COUNT( DISTINCT cust_pkg.locationnum )
+ # FROM cust_bill_pkg
+ # LEFT JOIN cust_pkg USING (pkgnum)
+ # WHERE invnum = 278
+ # AND cust_bill_pkg.pkgnum > 0
+
+ my $result = qsearchs({
+ select => 'COUNT(DISTINCT cust_pkg.locationnum) as location_count',
+ table => 'cust_bill_pkg',
+ addl_from => 'LEFT JOIN cust_pkg USING (pkgnum)',
+ extra_sql => 'WHERE invnum = '.dbh->quote( $self->invnum )
+ . ' AND cust_bill_pkg.pkgnum > 0'
+ });
+ ref $result ? $result->location_count : 0;
+}
+
+
+