You are not allowed to hold overnight positions in either the Tryout or live account stages. All accounts will need to be flat between 3.10pm and 5pm CT. If you have not flattened your book at this stage or attempt to add a position you will be automatically liquidated and this will constitute a rule break.
There is a big red button "Exit All Positions Cancel All' under the Equity tab dropdown in TraderTalentPro, we strongly recommend you click this once you are done for the day.