I had our "bootcampers" use a .8 envelope for the openings. .8 of 1 percent over and under the estimated FV price of each stock (beta adjusted for sector, in some cases).
I will try to do a weekly recap, I missed a day this week....
Questions were about modifying automated entry prices (over-ride), and i showed them how to do that. Also, questions on last minute updates due to pre-opening indications....explained update functions.