The smaller bag labeled "priming sugar" should not be added until bottling ... I think you already know that because you didn't ask, but just making sure.
Is the larger bag of sugar labeled with what kind it is, and how much? My guess is it's either maltodextrin (unfermentable) for extra body, or dextrose/corn sugar (fermentable) for extra alcohol.
Either maltodextrin or dextrose would be added to the wort while it's boiling. If it's labeled as something else, let us know.
Read my brewing blog here! Last of the Zyme Lords
BOUSIRIS BOUERY - Home of the Zyme Lord
"His is the House that Malt Made."
- James Joyce
Old Took's Rethe IPA
Weiss Blau Weiss Bavarian Hefeweizen
- empty tap -
Le Petit Plésiosaure Summit Saison
Anna Livia Dry Stout
Kessler's Rampage London Bitter
unnamed ginger metheglin