its a two days process .

FIRST DAY only written work ( in the form of different tests )
these tests include questios abt maths , english , general knowledge ( a little ) , story writing , personality assessment tests ,
what they want to know in actual ?
they simply look for ur approach towards life , attitude ( how do u behave in ur daily life ) & ur unintentional habits . becareful abt writing ur hobbies & preferences . questions can be raised abt them afterwards by the psychologist & the panel .
HINT . try to be as positive as possible , natural ( dont write fake ideas ) . think before what u write ?( though u dont get enough time for that ) . dont even think of bluffing them .
get any ISSB psychological tests book & try to grasp the ideas behind every question which may be asked to u .

SECOND DAY :
group disscussions & command task ( will tell u later abt them )
a 5-10 minutes interview taken by the psychologists . ( they may ask u anything what u write in first day tests + general GUP SHUP .
After 10 days u 'll have to face the panel in ur main interview .
for interview i'll suggest u ABC's of good lanuage !

A for Accuracy
B for Brevity
C for Clarity .

dont try to adopt verbose style & schorlarly views . TRy to keep ur language ACTIVE , SPARE & PRECISE .
have a review of ur subjects , ur specialised subject & current affairs . conduct mock interviews , have group disscussions & do perform fake command task .