hide columns but show header's cells grid

Migrateduser

<p>Hi,</p>
<p>I'm trying to hide all the columns (G, DT, PJ )except the third (%), but when I do so the header (exécution) desapears too. so I want to mantain the "Exécution" grid as the header and only % column.</p>
<p> </p>
<p>Thanks<br>
 </p>