Add/Insert/Remove/Move Layer

Hello I would like to know how to delete or move a layer in a CATDrawing under catia v5

To insert I use: Insert/Drawing/Layers/New Layer.

Unfortunately, I don't know how to delete, insert a layer in a specific place, or move a layer to a specific place.

Thank you for your feedback.

Hello, I answer myself (in part):

To delete, just right-click / delete in the tree (on the left part of the screen for me)
You can also cut / paste which allowed me to add a layer where I wanted but at the cost of many manipulations...
I don't dare to believe that this is the only solution!
Anyone have an idea for inserting/moving a layer

Thank you in advance.