As you develop and can evidence your competence to conduct work of a certain class, your registered class and types of work you can conduct will increase.
Wrth i chi ddatblygu a dangos tystiolaeth o'ch cymhwysedd i gynnal gwaith dosbarth penodol, bydd eich dosbarth cofrestredig a'r mathau o waith y gallwch eu gwneud yn cynyddu.