To move part of the edited geometry please do the following steps:
Please pick the Mark & move tool.
Click on the geometry which you want to move. In this example we will move the smaller geometry (number 1). The geometry will change its colour.
Now please pick the Shift tool and use it to move a part of edited geometry. For a full guide of the Shift tool please visit: Shift
If you accept the changes please click the Save button on the Edit Record panel.