Okay, well just I read this looks like if you give permission on your cash account they will be lent. I don't know I wish there was something showing if your shares are being lent or not. I would just say lock them up either way wouldn't hurt having a high sell order till your ready to make a move.
Everything I post is my opinion. I only work and trade for myself not employed or compensated by anyone or firm in the financial industry... and I never short stocks...