the info is the keywords for the activity knows what you want extract, typing “invoice-no”, actvity knows you want extracts the number of invoice for example 
more info about this here 
For now, we can’t train the model personally, but appears in the future this will be possible, the validation station is for you see if all it’s ok or indicate some values that wasn’t extracted
ashokkarale
MD_Farhan1
Ajay_Mishra
postwick
Dheerendra_vishwakarma
Anil_G
chandreshsinh.jadeja
Gautham_Pattabiraman
vrdabberu
aravindbalineni123