<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi,<div>I'm quite new to Drupal and I'm doing quite a big project in it. </div><div>I'll try to keep my questions as short as I can. I wonder if anyone can help. This is my scenario..</div><div><br class="webkit-block-placeholder"></div><div>I have a hierarchy something like this:</div><div><br class="webkit-block-placeholder"></div><div>Region 1</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>-- Vehicle 1<br class="webkit-block-placeholder"></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>---- Driver 1<br class="webkit-block-placeholder"></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>---- Driver 2<br class="webkit-block-placeholder"></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>-- Vehicle 2<br class="webkit-block-placeholder"></div><div><div><span class="Apple-tab-span" style="white-space:pre"> </span>---- Driver 3<br class="webkit-block-placeholder"></div><div><span class="Apple-tab-span" style="white-space: pre; "> </span>---- Driver 4</div></div><div>Region 2</div><div><div><span class="Apple-tab-span" style="white-space: pre; "> </span>-- Vehicle 3<br class="webkit-block-placeholder"></div><div><span class="Apple-tab-span" style="white-space: pre; "> </span>---- Driver 4<br class="webkit-block-placeholder"></div><div><span class="Apple-tab-span" style="white-space: pre; "> </span>---- Driver 6<br class="webkit-block-placeholder"></div><div><span class="Apple-tab-span" style="white-space: pre; "> </span>-- Vehicle 4<br class="webkit-block-placeholder"></div><div><div><span class="Apple-tab-span" style="white-space: pre; "> </span>---- Driver 7<br class="webkit-block-placeholder"></div><div><span class="Apple-tab-span" style="white-space: pre; "> </span>---- Driver 8</div><div>etc</div></div></div><div><br class="webkit-block-placeholder"></div><div>On the submit form, I have an active select that once Region is selected, it filters the vehicle list, which then filters the Driver list<br><div>My question is, how do I add, say, a "Co-Driver" (who will be at the same level as the Driver)?</div><div><br class="webkit-block-placeholder"></div><div>In other words, once someone has selected the Vehicle, I need there to be 2 lists (dropdowns) that are filtered with Drivers and Co-drivers. </div><div>I hope that makes sense!</div><div><br class="webkit-block-placeholder"></div><div> <span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; ">Any help would be greatly appreciated. Thanks!<br class="Apple-interchange-newline"><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div><br class="khtml-block-placeholder"></div><div><br class="khtml-block-placeholder"></div><div>Kind Regards,</div><div><br class="khtml-block-placeholder"></div><div>Graeme McKibbin</div><div>Software Developer</div><div><br></div><br class="Apple-interchange-newline"></span></span> </div><br></div></body></html>