You can remap the MIDI notes assigned to pads in an existing program:
Edit > Program > Note Mapping
There are presets, but not a GM one.
You cannot configure any global settings for this, the default mapping is now Chromatic C1 (used to be 'Classic MPC').
Best way to do this would be to create a blank GM program template to your exact specifications, save it somewhere (or save an entire project template with it inside) and then load this up when building your own GM drum kits from scratch.
Editing many existing MPC kits to a preferred GM layout is a laborious task in the MPC Software. It's actually easier to open the XPM file in a text editor and copy paste your GM layout note mapping to replace the existing mapping. This is the relevant section (this was taken from a kit with 'classic mpc' mapping enabled).
Code: Select all <PadNoteMap>
<PadNote number="1">
<Note>37</Note>
</PadNote>
<PadNote number="2">
<Note>36</Note>
</PadNote>
<PadNote number="3">
<Note>42</Note>
</PadNote>
<PadNote number="4">
<Note>82</Note>
</PadNote>
<PadNote number="5">
<Note>40</Note>
</PadNote>
<PadNote number="6">
<Note>38</Note>
</PadNote>
<PadNote number="7">
<Note>46</Note>
</PadNote>
<PadNote number="8">
<Note>44</Note>
</PadNote>
<PadNote number="9">
<Note>48</Note>
</PadNote>
<PadNote number="10">
<Note>47</Note>
</PadNote>
<PadNote number="11">
<Note>45</Note>
</PadNote>
<PadNote number="12">
<Note>43</Note>
</PadNote>
<PadNote number="13">
<Note>49</Note>
</PadNote>
<PadNote number="14">
<Note>55</Note>
</PadNote>
<PadNote number="15">
<Note>51</Note>
</PadNote>
<PadNote number="16">
<Note>53</Note>
</PadNote>
<PadNote number="17">
<Note>54</Note>
</PadNote>
<PadNote number="18">
<Note>69</Note>
</PadNote>
<PadNote number="19">
<Note>81</Note>
</PadNote>
<PadNote number="20">
<Note>80</Note>
</PadNote>
<PadNote number="21">
<Note>65</Note>
</PadNote>
<PadNote number="22">
<Note>66</Note>
</PadNote>
<PadNote number="23">
<Note>76</Note>
</PadNote>
<PadNote number="24">
<Note>77</Note>
</PadNote>
<PadNote number="25">
<Note>56</Note>
</PadNote>
<PadNote number="26">
<Note>62</Note>
</PadNote>
<PadNote number="27">
<Note>63</Note>
</PadNote>
<PadNote number="28">
<Note>64</Note>
</PadNote>
<PadNote number="29">
<Note>73</Note>
</PadNote>
<PadNote number="30">
<Note>74</Note>
</PadNote>
<PadNote number="31">
<Note>71</Note>
</PadNote>
<PadNote number="32">
<Note>39</Note>
</PadNote>
<PadNote number="33">
<Note>52</Note>
</PadNote>
<PadNote number="34">
<Note>57</Note>
</PadNote>
<PadNote number="35">
<Note>58</Note>
</PadNote>
<PadNote number="36">
<Note>59</Note>
</PadNote>
<PadNote number="37">
<Note>60</Note>
</PadNote>
<PadNote number="38">
<Note>61</Note>
</PadNote>
<PadNote number="39">
<Note>67</Note>
</PadNote>
<PadNote number="40">
<Note>68</Note>
</PadNote>
<PadNote number="41">
<Note>70</Note>
</PadNote>
<PadNote number="42">
<Note>72</Note>
</PadNote>
<PadNote number="43">
<Note>75</Note>
</PadNote>
<PadNote number="44">
<Note>78</Note>
</PadNote>
<PadNote number="45">
<Note>79</Note>
</PadNote>
<PadNote number="46">
<Note>35</Note>
</PadNote>
<PadNote number="47">
<Note>41</Note>
</PadNote>
<PadNote number="48">
<Note>50</Note>
</PadNote>
<PadNote number="49">
<Note>83</Note>
</PadNote>
<PadNote number="50">
<Note>84</Note>
</PadNote>
<PadNote number="51">
<Note>85</Note>
</PadNote>
<PadNote number="52">
<Note>86</Note>
</PadNote>
<PadNote number="53">
<Note>87</Note>
</PadNote>
<PadNote number="54">
<Note>88</Note>
</PadNote>
<PadNote number="55">
<Note>89</Note>
</PadNote>
<PadNote number="56">
<Note>90</Note>
</PadNote>
<PadNote number="57">
<Note>91</Note>
</PadNote>
<PadNote number="58">
<Note>92</Note>
</PadNote>
<PadNote number="59">
<Note>93</Note>
</PadNote>
<PadNote number="60">
<Note>94</Note>
</PadNote>
<PadNote number="61">
<Note>95</Note>
</PadNote>
<PadNote number="62">
<Note>96</Note>
</PadNote>
<PadNote number="63">
<Note>97</Note>
</PadNote>
<PadNote number="64">
<Note>98</Note>
</PadNote>
<PadNote number="65">
<Note>19</Note>
</PadNote>
<PadNote number="66">
<Note>20</Note>
</PadNote>
<PadNote number="67">
<Note>21</Note>
</PadNote>
<PadNote number="68">
<Note>22</Note>
</PadNote>
<PadNote number="69">
<Note>23</Note>
</PadNote>
<PadNote number="70">
<Note>24</Note>
</PadNote>
<PadNote number="71">
<Note>25</Note>
</PadNote>
<PadNote number="72">
<Note>26</Note>
</PadNote>
<PadNote number="73">
<Note>27</Note>
</PadNote>
<PadNote number="74">
<Note>28</Note>
</PadNote>
<PadNote number="75">
<Note>29</Note>
</PadNote>
<PadNote number="76">
<Note>30</Note>
</PadNote>
<PadNote number="77">
<Note>31</Note>
</PadNote>
<PadNote number="78">
<Note>32</Note>
</PadNote>
<PadNote number="79">
<Note>33</Note>
</PadNote>
<PadNote number="80">
<Note>34</Note>
</PadNote>
<PadNote number="81">
<Note>99</Note>
</PadNote>
<PadNote number="82">
<Note>100</Note>
</PadNote>
<PadNote number="83">
<Note>101</Note>
</PadNote>
<PadNote number="84">
<Note>102</Note>
</PadNote>
<PadNote number="85">
<Note>103</Note>
</PadNote>
<PadNote number="86">
<Note>104</Note>
</PadNote>
<PadNote number="87">
<Note>105</Note>
</PadNote>
<PadNote number="88">
<Note>106</Note>
</PadNote>
<PadNote number="89">
<Note>107</Note>
</PadNote>
<PadNote number="90">
<Note>108</Note>
</PadNote>
<PadNote number="91">
<Note>109</Note>
</PadNote>
<PadNote number="92">
<Note>110</Note>
</PadNote>
<PadNote number="93">
<Note>111</Note>
</PadNote>
<PadNote number="94">
<Note>112</Note>
</PadNote>
<PadNote number="95">
<Note>113</Note>
</PadNote>
<PadNote number="96">
<Note>114</Note>
</PadNote>
<PadNote number="97">
<Note>115</Note>
</PadNote>
<PadNote number="98">
<Note>116</Note>
</PadNote>
<PadNote number="99">
<Note>117</Note>
</PadNote>
<PadNote number="100">
<Note>118</Note>
</PadNote>
<PadNote number="101">
<Note>119</Note>
</PadNote>
<PadNote number="102">
<Note>120</Note>
</PadNote>
<PadNote number="103">
<Note>121</Note>
</PadNote>
<PadNote number="104">
<Note>122</Note>
</PadNote>
<PadNote number="105">
<Note>123</Note>
</PadNote>
<PadNote number="106">
<Note>124</Note>
</PadNote>
<PadNote number="107">
<Note>125</Note>
</PadNote>
<PadNote number="108">
<Note>126</Note>
</PadNote>
<PadNote number="109">
<Note>127</Note>
</PadNote>
<PadNote number="110">
<Note>0</Note>
</PadNote>
<PadNote number="111">
<Note>1</Note>
</PadNote>
<PadNote number="112">
<Note>2</Note>
</PadNote>
<PadNote number="113">
<Note>3</Note>
</PadNote>
<PadNote number="114">
<Note>4</Note>
</PadNote>
<PadNote number="115">
<Note>5</Note>
</PadNote>
<PadNote number="116">
<Note>6</Note>
</PadNote>
<PadNote number="117">
<Note>7</Note>
</PadNote>
<PadNote number="118">
<Note>8</Note>
</PadNote>
<PadNote number="119">
<Note>9</Note>
</PadNote>
<PadNote number="120">
<Note>10</Note>
</PadNote>
<PadNote number="121">
<Note>11</Note>
</PadNote>
<PadNote number="122">
<Note>12</Note>
</PadNote>
<PadNote number="123">
<Note>13</Note>
</PadNote>
<PadNote number="124">
<Note>14</Note>
</PadNote>
<PadNote number="125">
<Note>15</Note>
</PadNote>
<PadNote number="126">
<Note>16</Note>
</PadNote>
<PadNote number="127">
<Note>17</Note>
</PadNote>
<PadNote number="128">
<Note>18</Note>
</PadNote>
</PadNoteMap>
You should see its fairly simple to edit this to create a custom GM map (padnote number 1 is pad A01). Once set up (make sure you don't repeat any MIDI numbers), copy paste this to replace the padnotemap section in your existing kits. Much quicker than using the software GUI. For example, for pads A01 to A04, with kick, snare, closed hat, open hat respectively:
Code: Select all <PadNote number="1">
<Note>36</Note>
</PadNote>
<PadNote number="2">
<Note>38</Note>
</PadNote>
<PadNote number="3">
<Note>42</Note>
</PadNote>
<PadNote number="4">
<Note>46</Note>
</PadNote>
And so on.....