XSLT - add one level for multivalued - xslt

Question

Could you help me with create a code which would be able to convert data as below.
I need to add one level to data contained in entry. Data come from multivalued attribute but are writing as single row. I don't know how to do this and asking for your help.
I have this code but it doesn't work as I expect. If don't know XLST so this is a reason why I ask.
<entry>
<c>PL</c>
<cn>dackjo</cn>
<department>FO</department>
<givenName>Joe</givenName>
<plant>Berlin</plant>
<plant>Praga</plant>
<sec>admin</sec>
<sec>worker</sec>
<ou>PL</ou>
<sn>Dack</sn>
<title>worker</title>
<preferredLanguage>EN</preferredLanguage>
<uid>u12c55cb--4efe</uid>
<timezone>CET</timezone>
</entry>
I have to convert values as above to format below. We need to add one
level and group multivalues behind it.
expected output:
<entry>
<c>PL</c>
<cn>dackjo</cn>
<department>FO</department>
<givenName>Joe</givenName>
<Plants>
<plant>Berlin</plant>
<plant>Praga</plant>
</Plants>
<SecRoles>
<sec>admin</sec>
<sec>admin</sec>
</SecRoles>
<ou>PL</ou>
<sn>Dack</sn>
<title>worker</title>
<preferredLanguage>EN</preferredLanguage>
<uid>u12c55cb--4efe</uid>
<timezone>CET</timezone>
</entry>

Answer 1

An output similar - but not identical - to yours could be produced using:
XSLT 2.0
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="/entry">
<xsl:copy>
<xsl:copy-of select="* except plant"/>
<Plants>
<xsl:copy-of select="plant"/>
</Plants>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
--
Demo: https://xsltfiddle.liberty-development.net/bET2rWW

Answer 2

My solution for this topic. Maybe not sophisticated but it works at the moment.
<xsl:template match="entry">
<xsl:copy>
<xsl:copy-of select="UserName"/>
<xsl:copy-of select="isRetired" />
<xsl:copy-of select="Language"/>
<xsl:copy-of select="FirstName" />
<xsl:copy-of select="LastName"/>
<xsl:copy-of select="Email" />
<xsl:copy-of select="EmployeeCode"/>
<xsl:copy-of select="ExEmployee" />
<xsl:copy-of select="MobilePhone"/>
<xsl:copy-of select="JobTitle" />
<xsl:copy-of select="Location"/>
<Plants>
<xsl:copy-of select="Plant" />
</Plants>
<Security>
<xsl:copy-of select="Role" />
</Security>
</xsl:copy>
</xsl:template>
Thank you for any help.