No as Validation. I think a Validation is a JMP PRO feature. So if the Validation button does not appear, before, running the Logistic regression from the main menu select Rows > Row Selection > Select Where ( same as CTRL + Shift + W ) and a dialog will appear. Select Validation and type Holdout, as shown below, then OK. Then select Rows, Hiide and Exclude. Then run your logistic regression. After Running if tiy save the probability model, the predictions for Holdout will also be computed.