Hi,
1) I think that you have to create two custom fields, and then edit the view "product / show_block_custom_main" in HikaShop > Display > Views.
and replace the code:
?>
<tr class="hikashop_product_custom_<?php echo $oneExtraField->field_namekey;?>_line">
<td class="key">
<span id="hikashop_product_custom_name_<?php echo $oneExtraField->field_id;?>" class="hikashop_product_custom_name">
<?php echo $this->fieldsClass->getFieldName($oneExtraField);?>
</span>
</td>
<td>
<span id="hikashop_product_custom_value_<?php echo $oneExtraField->field_id;?>" class="hikashop_product_custom_value">
<?php echo $this->fieldsClass->show($oneExtraField,$value); ?>
</span>
</td>
</tr>
<?php
By, for example:
if($oneExtraField->field_namekey == 'surname'){
?>
<tr class="hikashop_product_custom_<?php echo $oneExtraField->field_namekey;?>_line">
<td class="key">
<span id="hikashop_product_custom_name_<?php echo $oneExtraField->field_id;?>" class="hikashop_product_custom_name">
<?php echo "Name";?>
</span>
</td>
<td>
<span id="hikashop_product_custom_value_<?php echo $oneExtraField->field_id;?>" class="hikashop_product_custom_value">
<?php
echo $this->fieldsClass->show($oneExtraField,$value);
}elseif($oneExtraField->field_namekey == 'lastname'){
echo " ".$this->fieldsClass->show($oneExtraField,$value);
?>
</span>
</td>
</tr>
<?php
}else{
?>
<tr class="hikashop_product_custom_<?php echo $oneExtraField->field_namekey;?>_line">
<td class="key">
<span id="hikashop_product_custom_name_<?php echo $oneExtraField->field_id;?>" class="hikashop_product_custom_name">
<?php echo $this->fieldsClass->getFieldName($oneExtraField);?>
</span>
</td>
<td>
<span id="hikashop_product_custom_value_<?php echo $oneExtraField->field_id;?>" class="hikashop_product_custom_value">
<?php echo $this->fieldsClass->show($oneExtraField,$value); ?>
</span>
</td>
</tr>
<?php
}
2) You can hide the button filter in the options of the Filter Module in Joomla > Extensions > Module manager. To apply a filter automatically, in HikaShop > Display > Filters edit your filter and choose yes for the option "Submit on click".