Need help tp run independent samples t-test in SPSS, do I need to add a grouping variable, would this be tenure?

Independent-Samples T Test X Test Variable(s): Options... ID Level of Engagement with your Supervisor [scale of 0 - 20] [Sup... I enjoy my work ... [WorkEnjoyment] Length of time with company [Tenure] Bootstrap... Level of Engagement with your Job [scale of 0 - 20] [JobEngage.. Level of Engagement with your Team [scale of 0 - 20] [TeamEng... Level of Engagement with your Agency / Department [scale of 0... da VAR00001 Grouping Variable: Define Groups... Estimate effect sizes OK Paste Reset Cancel Help