add small space in a grid layout

Hi,

How can I add small variable space within a column in a grid layout?
(as in sub-bullets in MS office).

I have 5 QCheckBoxes. 3,4,5 are sub boxes of 2.

Please look at the attached picture(1pic.jpg).

Try to use QSpacerItem.

I tried it. But I could not achieve the desired result. Following is the sample code:

Code:

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QVBoxLayout *MySubLayout = new QVBoxLayout(this);
 QGroupBox   *MyGroupBox  = new QGroupBox(tr("Group:1"));
 QGridLayout *MyGridLayout    = new QGridLayout(this);
 
 QCheckBox *Chek1 = new QCheckBox(tr("Check1")); //main checkbox1
 QCheckBox *Chek2 = new QCheckBox(tr("Check2"));  // main checkbox2
 
 QCheckBox *Chek3 = new QCheckBox(tr("Check3")); //sub checkbox1
 QCheckBox *Chek4 = new QCheckBox(tr("Check4")); //sub checkbox2
 
MyGroupBox->setLayout(MyGridLayout);
 
OutputLayout->addWidget(Chek1,1,0);
OutputLayout->addWidget(Chek2,2,0);
OutputLayout->addWidget(Chek3,3,0); // space required before this checkbox
OutputLayout->addWidget(Chek4,4,0); //space required before this checkbox
 
MySubLayout->addWidget(MyGroupBox);

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Please indicate how can I add space as illustrated in the 1pic.jpg. Thanks

@Spirit: could u plz indicate where can I insert QSpacerItem in the above lines to get the desired result as shown in the pic?