Pedal in front of Kemper???

Yes, you can do that.

Quote from deckard1

my guitar go into the pedal and then the pedal going into the guitar input of the Kemper?

Sure. Consider the Kemper your amp like any other amp you used before. It is a special one for sure but you can use it like the other stuff. Put pedals in front which are typically in front and put into the loop what you would put in the loop of any other amp as well. Whereby the latter probably is a rare case as the Kemper delivers such beautiful delays, reverbs and stuff