Activate section square command

[Anonymous]

Hello, I need to use the commnand hightlight. 

Don't know why is unable. 

Someone can help me?

Thank's

[ToanDN · Accepted solution]

You need to be in a 3d view.

[Anonymous]

@ToanDN it's the same.

[ToanDN · Accepted solution]

Select one or multiple elements in the 3D view and try again.