Ok, so I have no idea what I read the first time
Here is what you want to look for in the hotbutton xml file:
<!-- EXTRA Inventory Slots -->
<!-- IS_SECONDARY 14 -->
<InvSlot item="HBInvSlot10">
<RelativePosition>true</RelativePosition>
<Location>
<X>136</X>
<Y>85</Y>
</Location>
<Size>
<CX>28</CX>
<CY>28</CY>
</Size>
<Background>A_InvWrist</Background>
<EQType>14</EQType>
<Style_VScroll>false</Style_VScroll>
<Style_HScroll>false</Style_HScroll>
<Style_Transparent>false</Style_Transparent>
</InvSlot>
<!-- IS_PRIMARY 13 -->
<InvSlot item="HBInvSlot13">
<RelativePosition>true</RelativePosition>
<Location>
<X>136</X>
<Y>46</Y>
</Location>
<Size>
<CX>28</CX>
<CY>28</CY>
</Size>
<Background>A_InvChest</Background>
<EQType>13</EQType>
<Style_VScroll>false</Style_VScroll>
<Style_HScroll>false</Style_HScroll>
<Style_Transparent>false</Style_Transparent>
</InvSlot>
<!-- IS_INV_07 28 -->
<InvSlot item="HBInvSlot12">
<RelativePosition>true</RelativePosition>
<Location>
<X>136</X>
<Y>162</Y>
</Location>
<Size>
<CX>28</CX>
<CY>28</CY>
</Size>
<Background>A_InvHands</Background>
<EQType>28</EQType>
<Style_VScroll>false</Style_VScroll>
<Style_HScroll>false</Style_HScroll>
<Style_Transparent>false</Style_Transparent>
</InvSlot>
<!-- IS_R_WRIST 10 -->
<InvSlot item="HBInvSlot15">
<RelativePosition>true</RelativePosition>
<Location>
<X>136</X>
<Y>123</Y>
</Location>
<Size>
<CX>28</CX>
<CY>28</CY>
</Size>
<Background>A_InvArms</Background>
<EQType>10</EQType>
<Style_VScroll>false</Style_VScroll>
<Style_HScroll>false</Style_HScroll>
<Style_Transparent>false</Style_Transparent>
</InvSlot>
<!-- IS_INV_08 29 -->
<InvSlot item="HBInvSlot17">
<RelativePosition>true</RelativePosition>
<Location>
<X>136</X>
<Y>201</Y>
</Location>
<Size>
<CX>28</CX>
<CY>28</CY>
</Size>
<Background>A_InvPrimary</Background>
<EQType>29</EQType>
<Style_VScroll>false</Style_VScroll>
<Style_HScroll>false</Style_HScroll>
<Style_Transparent>false</Style_Transparent>
</InvSlot>
<!-- END EXTRA Inventory Slots -->
Change the <EQType>??</EQType> to what ever clicky you want.
Hope that helps.
Kuv