Wiktionary:Template editors

User group
Name templateeditor
Template editor
Rights Special:ListGroupRights
Members (25) All, Active
Change log Special:Log/rights
Your groups Local, Global
Group list Local, Global

Have right to edit protected templates (this right is included in the administrator user group). Despite the name, any page can be "template editor" protected, not just templates or modules.

You may request this right in the WT:BP. (Admins may nominate a user at WT:WL and follow the procedure there.)