You define the SOUTH (button) panel first, because a DockPanel is first come, first served when it comes to claiming corner space.

首先要定义南侧（按钮）面板，因为在请求角落处时，DockPanel 是最先出现、最先被服务的。

youdao

The Bush Administration refused to participate as an active member, claiming the panel was overly influenced by countries with serious human-rights problems of its own.

VOA: standard.2009.09.14

Rangel failed to pay taxes on a Dominican Republic villa for 17 years and, evidence before the U.S. Congressional Ethics Panel indicates, lied in claiming he was unaware of his own tax evasion.

FORBES: Rangel, Rattner Deserve To Share A Prison Cell

But though a handful of people have come forward claiming to own it, the ball hasn't been authenticated, according to our panel.

FORBES

And Conservative MP Peter Bone, who sits on the panel, decried the move as "a stitch-up", claiming it was an attempt by the executive "to ignore Parliament and impose its will on the House".

BBC: Government criticised over Backbench Committee changes