<div dir="ltr"><p>Hi all,</p><p>I have a big broblem, I want use Umbrella Sampling to constrain distance between two groups of atoms, but after reading manual I don't understant how to do it. In manual I found information only about fixing coordinates. Can someone tell me how to do it.</p>
<p>Sorry for my bad english.</p><p>Thanks in advance.</p></div>