Reza, it might help if you posted the complete syntax rather than just the /EMMEANS sub-command.  (For those who do not recognize it, this is SPSS syntax.)  If you could post a reproducible example, even better.  HTH.

For sure, here you are (complete SPSS syntax):

GLM F_pastB F_pastB_new s_FAT_Int s_Fat_Int_new s_FAT_att s_Fat_att_new s_FAT_sn s_Fat_SN_new s_FAT_pbc s_Fat_PBC_new F_Prisk_a F_Prisk_a_new F_Prisk_b F_Prisk_b_new s_FAT_Plan s_Fat_Plan_new BY Group

/WSFACTOR=Time 2 Polynomial

/MEASURE=Bhav Int Att Sn Pbc Risk1 Risk2 Plan

/METHOD=SSTYPE(3)

/EMMEANS=TABLES(Group*Time) COMPARE(Time)

/PRINT=DESCRIPTIVE ETASQ TEST(MMATRIX) HOMOGENEITY

/CRITERIA=ALPHA(.05)

/WSDESIGN=Time

/DESIGN=Group.

I see the problem: although SPSS shows the pairwise comparisons for each DV and within each group (p-values for t-tests), SPSS does only provides a table for the multivariate effect within each group over the two measurement points, right?

I have no straight forward solution to incorporate it into the MANOVA syntax, but since you seem to be interested in univariate post-hoc analyses, why not calculating them separately for each significant DV? A group*time ANOVA with repeated measures for the latter factor for each DV of interest?

But I would be happy if someone has a more elegant approach at hand ;-)